ERA5 almanac — 8 years of real data
Where is it warm in September?
Ranked by historical clear-sky percentage from the ERA5 reanalysis (2018–2025, 176 destinations). Dubai leads with 100% historically clear days in this month (n=240). Every percentage below has its sample size beside it.
What you are reading: 8-year historical averages, not a forecast.
A destination that is historically 90% clear in September can still be overcast
this specific September. For this week’s actual forecast, each
destination links to its live page.
| # | Destination | Early September (1st–15th, n) |
Late September (16th–end, n) |
Month avg | Avg high | Verdict |
|---|---|---|---|---|---|---|
| 1 | Dubai AE | 100% (n=120) | 99% (n=120) | 100% | 102°F | Dubai is historically one of the clearest places in this month: 100% of days meet the clear bar on average across 8 years (n=240). |
| 2 | Palm Desert CA | 93% (n=120) | 94% (n=120) | 94% | 101°F | Palm Desert is historically one of the clearest places in this month: 94% of days meet the clear bar on average across 8 years (n=240). |
| 3 | Palm Springs CA | 94% (n=120) | 94% (n=120) | 94% | 100°F | Palm Springs is historically one of the clearest places in this month: 94% of days meet the clear bar on average across 8 years (n=240). |
| 4 | Palm Springs Desert CA | 94% (n=120) | 94% (n=120) | 94% | 102°F | Palm Springs Desert is historically one of the clearest places in this month: 94% of days meet the clear bar on average across 8 years (n=240). |
| 5 | Las Vegas NV | 88% (n=120) | 95% (n=120) | 92% | 98°F | Las Vegas is historically one of the clearest places in this month: 92% of days meet the clear bar on average across 8 years (n=240). |
| 6 | Los Angeles CA | 87% (n=120) | 87% (n=120) | 87% | 88°F | Los Angeles is historically one of the clearest places in this month: 87% of days meet the clear bar on average across 8 years (n=240). |
| 7 | Napa CA | 93% (n=120) | 79% (n=120) | 86% | 86°F | Napa is historically one of the clearest places in this month: 86% of days meet the clear bar on average across 8 years (n=240). |
| 8 | Santorini GR | 87% (n=120) | 86% (n=120) | 86% | 81°F | Santorini is historically one of the clearest places in this month: 86% of days meet the clear bar on average across 8 years (n=240). |
| 9 | Sonoma CA | 92% (n=120) | 81% (n=120) | 86% | 84°F | Sonoma is historically one of the clearest places in this month: 86% of days meet the clear bar on average across 8 years (n=240). |
| 10 | Wine Country Sonoma CA | 92% (n=120) | 81% (n=120) | 86% | 84°F | Wine Country Sonoma is historically one of the clearest places in this month: 86% of days meet the clear bar on average across 8 years (n=240). |
| 11 | Mykonos GR | 88% (n=120) | 82% (n=120) | 85% | 79°F | Mykonos is historically one of the clearest places in this month: 85% of days meet the clear bar on average across 8 years (n=240). |
| 12 | Moab UT | 80% (n=120) | 87% (n=120) | 84% | 88°F | Moab is historically one of the clearest places in this month: 84% of days meet the clear bar on average across 8 years (n=240). |
| 13 | Laguna Beach CA | 88% (n=120) | 78% (n=120) | 83% | 80°F | Laguna Beach is historically one of the clearest places in this month: 83% of days meet the clear bar on average across 8 years (n=240). |
| 14 | Marrakech MA | 79% (n=120) | 87% (n=120) | 83% | 92°F | Marrakech is historically one of the clearest places in this month: 83% of days meet the clear bar on average across 8 years (n=240). |
| 15 | Santa Barbara CA | 88% (n=120) | 78% (n=120) | 83% | 84°F | Santa Barbara is historically one of the clearest places in this month: 83% of days meet the clear bar on average across 8 years (n=240). |
| 16 | Phoenix AZ | 82% (n=120) | 81% (n=120) | 82% | 101°F | Phoenix is historically one of the clearest places in this month: 82% of days meet the clear bar on average across 8 years (n=240). |
| 17 | Scottsdale AZ | 83% (n=120) | 82% (n=120) | 82% | 100°F | Scottsdale is historically one of the clearest places in this month: 82% of days meet the clear bar on average across 8 years (n=240). |
| 18 | Scottsdale Desert Ridge AZ | 82% (n=120) | 82% (n=120) | 82% | 98°F | Scottsdale Desert Ridge is historically one of the clearest places in this month: 82% of days meet the clear bar on average across 8 years (n=240). |
| 19 | Algarve PT | 83% (n=120) | 77% (n=120) | 80% | 80°F | Algarve is historically one of the clearest places in this month: 80% of days meet the clear bar on average across 8 years (n=240). |
| 20 | San Diego CA | 88% (n=120) | 70% (n=120) | 79% | 78°F | San Diego clears solidly in this month — 79% of days on average across 8 years (n=240), avg high 78°F. |
| 21 | San Luis Obispo CA | 88% (n=120) | 70% (n=120) | 79% | 80°F | San Luis Obispo clears solidly in this month — 79% of days on average across 8 years (n=240), avg high 80°F. |
| 22 | Albuquerque NM | 77% (n=120) | 76% (n=120) | 76% | 85°F | Albuquerque clears solidly in this month — 76% of days on average across 8 years (n=240), avg high 85°F. |
| 23 | Seville ES | 79% (n=120) | 74% (n=120) | 76% | 89°F | Seville clears solidly in this month — 76% of days on average across 8 years (n=240), avg high 89°F. |
| 24 | Denver CO | 70% (n=120) | 78% (n=120) | 74% | 84°F | Denver clears solidly in this month — 74% of days on average across 8 years (n=240), avg high 84°F. |
| 25 | Sedona AZ | 71% (n=120) | 76% (n=120) | 74% | 86°F | Sedona clears solidly in this month — 74% of days on average across 8 years (n=240), avg high 86°F. |
| 26 | Athens GR | 72% (n=120) | 72% (n=120) | 72% | 84°F | Athens clears solidly in this month — 72% of days on average across 8 years (n=240), avg high 84°F. |
| 27 | Málaga / Costa del Sol ES | 71% (n=120) | 73% (n=120) | 72% | 82°F | Málaga / Costa del Sol clears solidly in this month — 72% of days on average across 8 years (n=240), avg high 82°F. |
| 28 | Newport Beach CA | 82% (n=120) | 59% (n=120) | 70% | 76°F | Newport Beach clears solidly in this month — 70% of days on average across 8 years (n=240), avg high 76°F. |
| 29 | Tucson AZ | 72% (n=120) | 69% (n=120) | 70% | 96°F | Tucson clears solidly in this month — 70% of days on average across 8 years (n=240), avg high 96°F. |
| 30 | Zion / Springdale UT | 73% (n=120) | 67% (n=120) | 70% | 79°F | Zion / Springdale clears solidly in this month — 70% of days on average across 8 years (n=240), avg high 79°F. |
| 31 | Lisbon PT | 69% (n=120) | 63% (n=120) | 66% | 80°F | Lisbon clears solidly in this month — 66% of days on average across 8 years (n=240), avg high 80°F. |
| 32 | Marfa TX | 58% (n=120) | 71% (n=120) | 64% | 84°F | Marfa clears solidly in this month — 64% of days on average across 8 years (n=240), avg high 84°F. |
| 33 | Taos NM | 59% (n=120) | 69% (n=120) | 64% | 77°F | Taos clears solidly in this month — 64% of days on average across 8 years (n=240), avg high 77°F. |
| 34 | Madrid ES | 68% (n=120) | 56% (n=120) | 62% | 80°F | Madrid clears solidly in this month — 62% of days on average across 8 years (n=240), avg high 80°F. |
| 35 | Nice / Côte d'Azur FR | 66% (n=120) | 53% (n=120) | 60% | 78°F | Nice / Côte d'Azur clears solidly in this month — 60% of days on average across 8 years (n=240), avg high 78°F. |
| 36 | Memphis TN | 57% (n=120) | 60% (n=120) | 58% | 85°F | Memphis is mixed in this month: clear 58% of days historically (n=240), avg high 85°F. Check the halves — the split can be wide. |
| 37 | Sicily IT | 57% (n=120) | 58% (n=120) | 58% | 82°F | Sicily is mixed in this month: clear 58% of days historically (n=240), avg high 82°F. Check the halves — the split can be wide. |
| 38 | Leavenworth WA | 66% (n=120) | 48% (n=120) | 57% | 78°F | Leavenworth is mixed in this month: clear 57% of days historically (n=240), avg high 78°F. Check the halves — the split can be wide. |
| 39 | Missoula MT | 72% (n=120) | 42% (n=120) | 57% | 76°F | Missoula is mixed in this month: clear 57% of days historically (n=240), avg high 76°F. Check the halves — the split can be wide. |
| 40 | Dubrovnik HR | 64% (n=120) | 48% (n=120) | 56% | 78°F | Dubrovnik is mixed in this month: clear 56% of days historically (n=240), avg high 78°F. Check the halves — the split can be wide. |
| 41 | Bend OR | 67% (n=120) | 43% (n=120) | 55% | 76°F | Bend is mixed in this month: clear 55% of days historically (n=240), avg high 76°F. Check the halves — the split can be wide. |
| 42 | Ibiza ES | 56% (n=120) | 53% (n=120) | 54% | 82°F | Ibiza is mixed in this month: clear 54% of days historically (n=240), avg high 82°F. Check the halves — the split can be wide. |
| 43 | Steamboat Springs CO | 64% (n=120) | 39% (n=120) | 52% | 74°F | Steamboat Springs is mixed in this month: clear 52% of days historically (n=240), avg high 74°F. Check the halves — the split can be wide. |
| 44 | Los Cabos MX | 41% (n=120) | 61% (n=120) | 51% | 90°F | Los Cabos is mixed in this month: clear 51% of days historically (n=240), avg high 90°F. Check the halves — the split can be wide. |
| 45 | Coeur d'Alene ID | 68% (n=120) | 33% (n=120) | 50% | 75°F | Coeur d'Alene is mixed in this month: clear 50% of days historically (n=240), avg high 75°F. Check the halves — the split can be wide. |
| 46 | Florence IT | 62% (n=120) | 38% (n=120) | 50% | 80°F | Florence is mixed in this month: clear 50% of days historically (n=240), avg high 80°F. Check the halves — the split can be wide. |
| 47 | Rome IT | 61% (n=120) | 38% (n=120) | 50% | 82°F | Rome is mixed in this month: clear 50% of days historically (n=240), avg high 82°F. Check the halves — the split can be wide. |
| 48 | Santa Fe NM | 50% (n=120) | 50% (n=120) | 50% | 76°F | Santa Fe is mixed in this month: clear 50% of days historically (n=240), avg high 76°F. Check the halves — the split can be wide. |
| 49 | Birmingham AL | 44% (n=120) | 54% (n=120) | 49% | 86°F | Birmingham is mixed in this month: clear 49% of days historically (n=240), avg high 86°F. Check the halves — the split can be wide. |
| 50 | Bozeman MT | 60% (n=120) | 35% (n=120) | 48% | 72°F | Bozeman is mixed in this month: clear 48% of days historically (n=240), avg high 72°F. Check the halves — the split can be wide. |
| 51 | Dallas TX | 46% (n=120) | 51% (n=120) | 48% | 90°F | Dallas is mixed in this month: clear 48% of days historically (n=240), avg high 90°F. Check the halves — the split can be wide. |
| 52 | Lake Tahoe CA | 65% (n=120) | 31% (n=120) | 48% | 72°F | Lake Tahoe is mixed in this month: clear 48% of days historically (n=240), avg high 72°F. Check the halves — the split can be wide. |
| 53 | Nashville TN | 48% (n=120) | 47% (n=120) | 48% | 83°F | Nashville is mixed in this month: clear 48% of days historically (n=240), avg high 83°F. Check the halves — the split can be wide. |
| 54 | Amalfi Coast IT | 52% (n=120) | 41% (n=120) | 46% | 80°F | Amalfi Coast is mixed in this month: clear 46% of days historically (n=240), avg high 80°F. Check the halves — the split can be wide. |
| 55 | Charlottesville VA | 53% (n=120) | 38% (n=120) | 46% | 81°F | Charlottesville is mixed in this month: clear 46% of days historically (n=240), avg high 81°F. Check the halves — the split can be wide. |
| 56 | Charlotte NC | 47% (n=120) | 41% (n=120) | 44% | 82°F | Charlotte is mixed in this month: clear 44% of days historically (n=240), avg high 82°F. Check the halves — the split can be wide. |
| 57 | Venice IT | 58% (n=120) | 29% (n=120) | 44% | 76°F | Venice is mixed in this month: clear 44% of days historically (n=240), avg high 76°F. Check the halves — the split can be wide. |
| 58 | Mallorca ES | 42% (n=120) | 42% (n=120) | 42% | 82°F | Mallorca is mixed in this month: clear 42% of days historically (n=240), avg high 82°F. Check the halves — the split can be wide. |
| 59 | Sun Valley ID | 60% (n=120) | 24% (n=120) | 42% | 71°F | Sun Valley is mixed in this month: clear 42% of days historically (n=240), avg high 71°F. Check the halves — the split can be wide. |
| 60 | Austin TX | 35% (n=120) | 47% (n=120) | 41% | 91°F | Austin is mixed in this month: clear 41% of days historically (n=240), avg high 91°F. Check the halves — the split can be wide. |
| 61 | Asheville NC | 41% (n=120) | 38% (n=120) | 40% | 78°F | Asheville is mixed in this month: clear 40% of days historically (n=240), avg high 78°F. Check the halves — the split can be wide. |
| 62 | Atlanta GA | 38% (n=120) | 42% (n=120) | 40% | 83°F | Atlanta is mixed in this month: clear 40% of days historically (n=240), avg high 83°F. Check the halves — the split can be wide. |
| 63 | New York City NY | 41% (n=120) | 38% (n=120) | 40% | 76°F | New York City is mixed in this month: clear 40% of days historically (n=240), avg high 76°F. Check the halves — the split can be wide. |
| 64 | Outer Banks NC | 38% (n=120) | 43% (n=120) | 40% | 78°F | Outer Banks is mixed in this month: clear 40% of days historically (n=240), avg high 78°F. Check the halves — the split can be wide. |
| 65 | Aspen CO | 52% (n=120) | 26% (n=120) | 39% | 72°F | Aspen is mostly overcast this month historically: only 39% of days clear on average across 8 years (n=240), avg high 72°F. |
| 66 | Albany NY | 43% (n=120) | 34% (n=120) | 38% | 75°F | Albany is mostly overcast this month historically: only 38% of days clear on average across 8 years (n=240), avg high 75°F. |
| 67 | Barcelona ES | 38% (n=120) | 37% (n=120) | 38% | 78°F | Barcelona is mostly overcast this month historically: only 38% of days clear on average across 8 years (n=240), avg high 78°F. |
| 68 | Hartford CT | 40% (n=120) | 36% (n=120) | 38% | 75°F | Hartford is mostly overcast this month historically: only 38% of days clear on average across 8 years (n=240), avg high 75°F. |
| 69 | Virginia Beach VA | 38% (n=120) | 38% (n=120) | 38% | 78°F | Virginia Beach is mostly overcast this month historically: only 38% of days clear on average across 8 years (n=240), avg high 78°F. |
| 70 | Whitefish MT | 55% (n=120) | 20% (n=120) | 38% | 70°F | Whitefish is mostly overcast this month historically: only 38% of days clear on average across 8 years (n=240), avg high 70°F. |
| 71 | San Antonio TX | 30% (n=120) | 42% (n=120) | 36% | 92°F | San Antonio is mostly overcast this month historically: only 36% of days clear on average across 8 years (n=240), avg high 92°F. |
| 72 | Shenandoah Valley VA | 49% (n=120) | 24% (n=120) | 36% | 78°F | Shenandoah Valley is mostly overcast this month historically: only 36% of days clear on average across 8 years (n=240), avg high 78°F. |
| 73 | Wilmington NC | 33% (n=120) | 38% (n=120) | 36% | 82°F | Wilmington is mostly overcast this month historically: only 36% of days clear on average across 8 years (n=240), avg high 82°F. |
| 74 | Big Sur CA | 40% (n=120) | 30% (n=120) | 35% | 72°F | Big Sur is mostly overcast this month historically: only 35% of days clear on average across 8 years (n=240), avg high 72°F. |
| 75 | Panama City Beach FL | 23% (n=120) | 47% (n=120) | 35% | 85°F | Panama City Beach is mostly overcast this month historically: only 35% of days clear on average across 8 years (n=240), avg high 85°F. |
| 76 | Jackson Hole WY | 48% (n=120) | 21% (n=120) | 34% | 70°F | Jackson Hole is mostly overcast this month historically: only 34% of days clear on average across 8 years (n=240), avg high 70°F. |
| 77 | Maui HI | 35% (n=120) | 32% (n=120) | 34% | 80°F | Maui is mostly overcast this month historically: only 34% of days clear on average across 8 years (n=240), avg high 80°F. |
| 78 | McCall ID | 49% (n=120) | 19% (n=120) | 34% | 70°F | McCall is mostly overcast this month historically: only 34% of days clear on average across 8 years (n=240), avg high 70°F. |
| 79 | Destin FL | 27% (n=120) | 39% (n=120) | 33% | 86°F | Destin is mostly overcast this month historically: only 33% of days clear on average across 8 years (n=240), avg high 86°F. |
| 80 | Hilton Head SC | 28% (n=120) | 38% (n=120) | 33% | 83°F | Hilton Head is mostly overcast this month historically: only 33% of days clear on average across 8 years (n=240), avg high 83°F. |
| 81 | Hudson Valley NY | 38% (n=120) | 28% (n=120) | 33% | 75°F | Hudson Valley is mostly overcast this month historically: only 33% of days clear on average across 8 years (n=240), avg high 75°F. |
| 82 | Kiawah Island SC | 29% (n=120) | 37% (n=120) | 33% | 83°F | Kiawah Island is mostly overcast this month historically: only 33% of days clear on average across 8 years (n=240), avg high 83°F. |
| 83 | 30A / Seaside FL | 27% (n=120) | 37% (n=120) | 32% | 85°F | 30A / Seaside is mostly overcast this month historically: only 32% of days clear on average across 8 years (n=240), avg high 85°F. |
| 84 | Aruba AW | 36% (n=120) | 27% (n=120) | 32% | 90°F | Aruba is mostly overcast this month historically: only 32% of days clear on average across 8 years (n=240), avg high 90°F. |
| 85 | Bryce Canyon UT | 41% (n=120) | 22% (n=120) | 32% | 71°F | Bryce Canyon is mostly overcast this month historically: only 32% of days clear on average across 8 years (n=240), avg high 71°F. |
| 86 | Charleston SC | 28% (n=120) | 37% (n=120) | 32% | 83°F | Charleston is mostly overcast this month historically: only 32% of days clear on average across 8 years (n=240), avg high 83°F. |
| 87 | Gulf Shores AL | 31% (n=120) | 33% (n=120) | 32% | 85°F | Gulf Shores is mostly overcast this month historically: only 32% of days clear on average across 8 years (n=240), avg high 85°F. |
| 88 | Savannah GA | 28% (n=120) | 37% (n=120) | 32% | 85°F | Savannah is mostly overcast this month historically: only 32% of days clear on average across 8 years (n=240), avg high 85°F. |
| 89 | Sea Island GA | 26% (n=120) | 37% (n=120) | 32% | 83°F | Sea Island is mostly overcast this month historically: only 32% of days clear on average across 8 years (n=240), avg high 83°F. |
| 90 | Boston MA | 38% (n=120) | 24% (n=120) | 31% | 74°F | Boston is mostly overcast this month historically: only 31% of days clear on average across 8 years (n=240), avg high 74°F. |
| 91 | Houston TX | 28% (n=120) | 32% (n=120) | 30% | 88°F | Houston is mostly overcast this month historically: only 30% of days clear on average across 8 years (n=240), avg high 88°F. |
| 92 | Park City UT | 41% (n=120) | 19% (n=120) | 30% | 70°F | Park City is mostly overcast this month historically: only 30% of days clear on average across 8 years (n=240), avg high 70°F. |
| 93 | Portland ME | 40% (n=120) | 19% (n=120) | 30% | 71°F | Portland is mostly overcast this month historically: only 30% of days clear on average across 8 years (n=240), avg high 71°F. |
| 94 | Seattle WA | 47% (n=120) | 13% (n=120) | 30% | 70°F | Seattle is mostly overcast this month historically: only 30% of days clear on average across 8 years (n=240), avg high 70°F. |
| 95 | New Orleans LA | 22% (n=120) | 35% (n=120) | 28% | 86°F | New Orleans is mostly overcast this month historically: only 28% of days clear on average across 8 years (n=240), avg high 86°F. → Try October |
| 96 | Paris FR | 37% (n=120) | 18% (n=120) | 28% | 72°F | Paris is mostly overcast this month historically: only 28% of days clear on average across 8 years (n=240), avg high 72°F. → Try July |
| 97 | The Hamptons NY | 38% (n=120) | 17% (n=120) | 28% | 72°F | The Hamptons is mostly overcast this month historically: only 28% of days clear on average across 8 years (n=240), avg high 72°F. → Try July |
| 98 | Traverse City MI | 28% (n=120) | 29% (n=120) | 28% | 72°F | Traverse City is mostly overcast this month historically: only 28% of days clear on average across 8 years (n=240), avg high 72°F. → Try July |
| 99 | Whistler BC | 41% (n=120) | 16% (n=120) | 28% | 68°F | Whistler is mostly overcast this month historically: only 28% of days clear on average across 8 years (n=240), avg high 68°F. → Try July |
| 100 | Cape Cod MA | 35% (n=120) | 19% (n=120) | 27% | 72°F | Cape Cod is mostly overcast this month historically: only 27% of days clear on average across 8 years (n=240), avg high 72°F. → Try July |
| 101 | Martha's Vineyard MA | 39% (n=120) | 15% (n=120) | 27% | 72°F | Martha's Vineyard is mostly overcast this month historically: only 27% of days clear on average across 8 years (n=240), avg high 72°F. → Try August |
| 102 | Burlington VT | 32% (n=120) | 21% (n=120) | 26% | 72°F | Burlington is mostly overcast this month historically: only 26% of days clear on average across 8 years (n=240), avg high 72°F. → Try July |
| 103 | Tokyo JP | 25% (n=120) | 26% (n=120) | 26% | 83°F | Tokyo is mostly overcast this month historically: only 26% of days clear on average across 8 years (n=240), avg high 83°F. → Try May |
| 104 | Kyoto JP | 18% (n=120) | 32% (n=120) | 25% | 84°F | Kyoto is mostly overcast this month historically: only 25% of days clear on average across 8 years (n=240), avg high 84°F. → Try May |
| 105 | Toronto ON | 27% (n=120) | 23% (n=120) | 25% | 72°F | Toronto is mostly overcast this month historically: only 25% of days clear on average across 8 years (n=240), avg high 72°F. → Try August |
| 106 | Crater Lake OR | 37% (n=120) | 11% (n=120) | 24% | 66°F | Crater Lake is mostly overcast this month historically: only 24% of days clear on average across 8 years (n=240), avg high 66°F. → Try July |
| 107 | Honolulu HI | 28% (n=120) | 20% (n=120) | 24% | 85°F | Honolulu is mostly overcast this month historically: only 24% of days clear on average across 8 years (n=240), avg high 85°F. → Try January |
| 108 | Newport RI | 35% (n=120) | 14% (n=120) | 24% | 71°F | Newport is mostly overcast this month historically: only 24% of days clear on average across 8 years (n=240), avg high 71°F. → Try July |
| 109 | Sydney AU | 22% (n=120) | 24% (n=120) | 23% | 70°F | Sydney is mostly overcast this month historically: only 23% of days clear on average across 8 years (n=240), avg high 70°F. → Try December |
| 110 | Vail CO | 38% (n=120) | 8% (n=120) | 23% | 70°F | Vail is mostly overcast this month historically: only 23% of days clear on average across 8 years (n=240), avg high 70°F. → Try August |
| 111 | Amelia Island FL | 17% (n=120) | 27% (n=120) | 22% | 84°F | Amelia Island is mostly overcast this month historically: only 22% of days clear on average across 8 years (n=240), avg high 84°F. → Try April |
| 112 | Jacksonville FL | 17% (n=120) | 27% (n=120) | 22% | 86°F | Jacksonville is mostly overcast this month historically: only 22% of days clear on average across 8 years (n=240), avg high 86°F. → Try April |
| 113 | Montréal QC | 28% (n=120) | 17% (n=120) | 22% | 70°F | Montréal is mostly overcast this month historically: only 22% of days clear on average across 8 years (n=240), avg high 70°F. → Try July |
| 114 | Boundary Waters MN | 22% (n=120) | 18% (n=120) | 20% | 68°F | Boundary Waters is mostly overcast this month historically: only 20% of days clear on average across 8 years (n=240), avg high 68°F. → Try July |
| 115 | Exuma BS | 24% (n=120) | 17% (n=120) | 20% | 85°F | Exuma is mostly overcast this month historically: only 20% of days clear on average across 8 years (n=240), avg high 85°F. → Try April |
| 116 | Door County WI | 22% (n=120) | 14% (n=120) | 18% | 69°F | Door County is poor for sun this month: just 18% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try August |
| 117 | Kennebunkport ME | 24% (n=120) | 12% (n=120) | 18% | 70°F | Kennebunkport is poor for sun this month: just 18% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try July |
| 118 | Stowe VT | 22% (n=120) | 14% (n=120) | 18% | 70°F | Stowe is poor for sun this month: just 18% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try August |
| 119 | St. Augustine FL | 11% (n=120) | 23% (n=120) | 17% | 83°F | St. Augustine is poor for sun this month: just 17% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try April |
| 120 | Bar Harbor ME | 22% (n=120) | 9% (n=120) | 16% | 68°F | Bar Harbor is poor for sun this month: just 16% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try July |
| 121 | Lanai HI | 20% (n=120) | 12% (n=120) | 16% | 82°F | Lanai is poor for sun this month: just 16% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try January |
| 122 | San Francisco CA | 16% (n=120) | 17% (n=120) | 16% | 69°F | San Francisco is poor for sun this month: just 16% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try October |
| 123 | Turks & Caicos TC | 19% (n=120) | 13% (n=120) | 16% | 85°F | Turks & Caicos is poor for sun this month: just 16% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 124 | Maldives MV | 19% (n=120) | 11% (n=120) | 15% | 83°F | Maldives is poor for sun this month: just 15% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try February |
| 125 | Mazatlán MX | 12% (n=120) | 18% (n=120) | 15% | 87°F | Mazatlán is poor for sun this month: just 15% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 126 | St. John, USVI VI | 16% (n=120) | 14% (n=120) | 15% | 80°F | St. John, USVI is poor for sun this month: just 15% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 127 | St. Martin SX | 18% (n=120) | 12% (n=120) | 15% | 80°F | St. Martin is poor for sun this month: just 15% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 128 | Anguilla AI | 15% (n=120) | 12% (n=120) | 14% | 84°F | Anguilla is poor for sun this month: just 14% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 129 | London GB | 20% (n=120) | 9% (n=120) | 14% | 68°F | London is poor for sun this month: just 14% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try July |
| 130 | St. Barthélemy BL | 14% (n=120) | 12% (n=120) | 13% | 84°F | St. Barthélemy is poor for sun this month: just 13% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 131 | Amsterdam NL | 20% (n=120) | 5% (n=120) | 12% | 68°F | Amsterdam is poor for sun this month: just 12% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try June |
| 132 | Tampa FL | 6% (n=120) | 18% (n=120) | 12% | 87°F | Tampa is poor for sun this month: just 12% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try April |
| 133 | Vancouver BC | 22% (n=120) | 3% (n=120) | 12% | 66°F | Vancouver is poor for sun this month: just 12% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try July |
| 134 | Key West FL | 14% (n=120) | 8% (n=120) | 11% | 85°F | Key West is poor for sun this month: just 11% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 135 | Sarasota FL | 6% (n=120) | 16% (n=120) | 11% | 86°F | Sarasota is poor for sun this month: just 11% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try April |
| 136 | Telluride CO | 20% (n=120) | 2% (n=120) | 11% | 66°F | Telluride is poor for sun this month: just 11% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try August |
| 137 | Cannon Beach OR | 12% (n=120) | 8% (n=120) | 10% | 66°F | Cannon Beach is poor for sun this month: just 10% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try August |
| 138 | Carmel-by-the-Sea CA | 9% (n=120) | 10% (n=120) | 10% | 67°F | Carmel-by-the-Sea is poor for sun this month: just 10% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try October |
| 139 | Montauk NY | 18% (n=120) | 3% (n=120) | 10% | 70°F | Montauk is poor for sun this month: just 10% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try August |
| 140 | Orlando FL | 8% (n=120) | 13% (n=120) | 10% | 86°F | Orlando is poor for sun this month: just 10% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 141 | Bali ID | 8% (n=120) | 10% (n=120) | 9% | 77°F | Bali is poor for sun this month: just 9% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try May |
| 142 | Naples FL | 6% (n=120) | 12% (n=120) | 9% | 88°F | Naples is poor for sun this month: just 9% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 143 | Big Sky MT | 17% (n=120) | 0% (n=120) | 8% | 62°F | Big Sky is poor for sun this month: just 8% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try July |
| 144 | Mérida MX | 8% (n=120) | 9% (n=120) | 8% | 92°F | Mérida is poor for sun this month: just 8% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 145 | Yellowstone WY | 16% (n=120) | 0% (n=120) | 8% | 62°F | Yellowstone is poor for sun this month: just 8% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try July |
| 146 | Fort Lauderdale FL | 3% (n=120) | 8% (n=120) | 6% | 86°F | Fort Lauderdale is poor for sun this month: just 6% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 147 | Nantucket MA | 11% (n=120) | 0% (n=120) | 6% | 68°F | Nantucket is poor for sun this month: just 6% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try August |
| 148 | Nassau BS | 7% (n=120) | 4% (n=120) | 6% | 86°F | Nassau is poor for sun this month: just 6% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 149 | Oaxaca MX | 5% (n=120) | 8% (n=120) | 6% | 77°F | Oaxaca is poor for sun this month: just 6% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try February |
| 150 | Palm Beach FL | 5% (n=120) | 8% (n=120) | 6% | 86°F | Palm Beach is poor for sun this month: just 6% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 151 | Punta Mita MX | 3% (n=120) | 9% (n=120) | 6% | 86°F | Punta Mita is poor for sun this month: just 6% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 152 | San Juan Islands WA | 10% (n=120) | 2% (n=120) | 6% | 64°F | San Juan Islands is poor for sun this month: just 6% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try August |
| 153 | Singapore SG | 4% (n=120) | 7% (n=120) | 6% | 86°F | Singapore is poor for sun this month: just 6% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try February |
| 154 | Antigua AG | 6% (n=120) | 4% (n=120) | 5% | 86°F | Antigua is poor for sun this month: just 5% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 155 | Cancún MX | 5% (n=120) | 5% (n=120) | 5% | 88°F | Cancún is poor for sun this month: just 5% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try April |
| 156 | Palm Beach Gardens FL | 2% (n=120) | 8% (n=120) | 5% | 86°F | Palm Beach Gardens is poor for sun this month: just 5% of days clear historically (n=240). The 8-year record says to look elsewhere. → Try March |
| 157 | Barbados BB | 3% (n=120) | 4% (n=120) | 4% | 84°F | Barbados is historically very rarely clear this month: only 4% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try March |
| 158 | Cayman Islands KY | 5% (n=120) | 2% (n=120) | 4% | 88°F | Cayman Islands is historically very rarely clear this month: only 4% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try January |
| 159 | Huatulco MX | 5% (n=120) | 4% (n=120) | 4% | 84°F | Huatulco is historically very rarely clear this month: only 4% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try March |
| 160 | Jamaica JM | 4% (n=120) | 3% (n=120) | 4% | 87°F | Jamaica is historically very rarely clear this month: only 4% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try January |
| 161 | Mexico City MX | 2% (n=120) | 6% (n=120) | 4% | 73°F | Mexico City is historically very rarely clear this month: only 4% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try February |
| 162 | Miami FL | 5% (n=120) | 4% (n=120) | 4% | 86°F | Miami is historically very rarely clear this month: only 4% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try March |
| 163 | Puerto Rico PR | 4% (n=120) | 5% (n=120) | 4% | 87°F | Puerto Rico is historically very rarely clear this month: only 4% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try January |
| 164 | Puerto Vallarta MX | 3% (n=120) | 4% (n=120) | 4% | 86°F | Puerto Vallarta is historically very rarely clear this month: only 4% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try March |
| 165 | Tulum MX | 5% (n=120) | 3% (n=120) | 4% | 88°F | Tulum is historically very rarely clear this month: only 4% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try April |
| 166 | Phuket TH | 2% (n=120) | 4% (n=120) | 3% | 84°F | Phuket is historically very rarely clear this month: only 3% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try February |
| 167 | Bangkok TH | 1% (n=120) | 2% (n=120) | 2% | 88°F | Bangkok is historically very rarely clear this month: only 2% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try January |
| 168 | Big Island HI | 5% (n=120) | 0% (n=120) | 2% | 69°F | Big Island is historically very rarely clear this month: only 2% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try August |
| 169 | Costa Rica — Guanacaste CR | 3% (n=120) | 2% (n=120) | 2% | 88°F | Costa Rica — Guanacaste is historically very rarely clear this month: only 2% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try February |
| 170 | Edinburgh GB | 3% (n=120) | 0% (n=120) | 2% | 61°F | Edinburgh is historically very rarely clear this month: only 2% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try July |
| 171 | Cartagena CO | 2% (n=120) | 0% (n=120) | 1% | 86°F | Cartagena is historically very rarely clear this month: only 1% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try February |
| 172 | Anchorage AK | 0% (n=120) | 0% (n=120) | 0% | 56°F | Anchorage is historically very rarely clear this month: only 0% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try July |
| 173 | Belize BZ | 1% (n=120) | 0% (n=120) | 0% | 86°F | Belize is historically very rarely clear this month: only 0% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try March |
| 174 | Costa Rica — Manuel Antonio CR | 0% (n=120) | 0% (n=120) | 0% | 83°F | Costa Rica — Manuel Antonio is historically very rarely clear this month: only 0% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try February |
| 175 | Kauai HI | 1% (n=120) | 0% (n=120) | 0% | 75°F | Kauai is historically very rarely clear this month: only 0% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try January |
| 176 | Mackinac Island MI | 0% (n=120) | 0% (n=120) | 0% | 62°F | Mackinac Island is historically very rarely clear this month: only 0% of days meet the clear bar across 8 years (n=240). Plan for clouds. → Try August |
Honest note on the bottom of this list: Mackinac Island is historically 0% clear in September (n=240 days). That is not a soft number — it means roughly 0 days out of every 100 historically meet our clear bar here in this month. If you want Mackinac Island, try August instead.
Frequently asked
Where is it warm and dry in September?
Dubai leads for September: 100% of days are historically clear (avg high 102°F, n=240 days, ERA5 2018–2025), and rain is uncommon there — only 0% of days see measurable rain.
How many destinations are reliably dry in September?
47 of the 161 destinations with rain data for September see measurable rain on 20% or fewer of days historically (ERA5 2018–2025). Cloud does not count against a destination here — rain is the only dealbreaker.
Does it rain much in September across these destinations?
Sometimes. Across 161 destinations with rain data for September, 37% of days see measurable rain on average historically (ERA5 2018–2025) — not frequent enough to rule out the month, but worth checking per destination.
Head-to-head comparisons for September
Comparisons between this month’s top-ranked destinations above — same 8-year ERA5 record, side by side.
Every month
All percentages are historical averages from the ERA5 reanalysis via Open-Meteo, 8 full years (2018–2025). “Clear” means avg high ≥ 72 °F, precipitation < 1 mm, and a non-precipitation weather code. This is history, not a forecast. The live 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.