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SunnyDays

ERA5 almanac — 8 years of real data

Miami in November

Miami in November is historically a poor month for sun: only 25% of days clear across 8 years (n=240, avg high 80°F). March is the clearest month for Miami historically. Historical average, not a forecast.

What you are reading: 8-year historical averages from the ERA5 reanalysis, not a forecast. A month that is historically 90% clear can still be overcast on your specific trip. For this week’s actual forecast, see the live Miami page. Both can be true at once: “historically strong in this month; this particular week is not.” We label which is which.

Early vs. Late November

Clear-sky percentage for Miami in November, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early November
1st–15th		 12% n=120 80°F
Late November
16th–end		 38% n=120 80°F
Full month average 25% n=240 80°F

Sunshine & warmth in November

A second measure using actual sunshine hours (ERA5 sunshine_duration), not the daily weather code. A Lowcountry day with 12 hours of sun and a 25-minute afternoon storm is counted below as a warm, sunny day — because it was. How we define this.

Sunshine-based metrics for Miami in November. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early November
1st–15th		 88% n=120
Late November
16th–end		 91% n=120
Full month average 90% n=240
10.1 h median sunshine per day 82% of days exceed 8 h sunshine 44% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 25%. Sunshine-based “warm & sunny”: 90%. The 65-point gap is from brief afternoon convective storms that stamp the whole day as “rain” in the WMO code but leave the bulk of the sunshine untouched.

Bottom line

Miami is mostly overcast in November historically: only 25% of days are clear across 8 years (n=240), avg high 80°F. The two halves differ materially (12% early, 38% late) — favour the late half of the month. If you want sun in Miami, March is historically much better. Most visitors this month will see more clouds than sun.

→ See all destinations in March — historically the best month for sun in Miami.

Every month in Miami

Compare across all months with data. Numbers are historical clear-sky %.

Historical clear-sky % for Miami, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 28% n=248 All destinations →
February 26% n=226 All destinations →
March 32% n=248 All destinations →
April 27% n=240 All destinations →
May 20% n=248 All destinations →
June 2% n=240 All destinations →
July 6% n=248 All destinations →
August 2% n=248 All destinations →
September 4% n=240 All destinations →
October 11% n=248 All destinations →
November ← this page 25% n=240 All destinations →
December 28% n=248 All destinations →

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.