ERA5 almanac — 8 years of real data

Maui in November

Maui in November: 40% of days see measurable rain, 76°F average high, 30% of days historically clear (n=240, ERA5 2018–2025).

Maui in November is historically a poor month for sun: only 30% of days clear across 8 years (n=240, avg high 76°F). 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 Maui 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 Maui 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	32%	n=120	76°F
Late November 16th–end	28%	n=120	76°F
Full month average	30%	n=240	76°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 Maui 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	96%	n=120
Late November 16th–end	90%	n=120
Full month average	93%	n=240

10.4 h median sunshine per day 84% of days exceed 8 h sunshine 40% of days see ≥ 1 mm rain — rain is not hidden

Comparison (old vs new): WMO-code “clear” bar: 30%. Sunshine-based “warm & sunny”: 93%. The 63-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

Maui is mostly overcast in November historically: only 30% of days are clear across 8 years (n=240), avg high 76°F. Most visitors this month will see more clouds than sun.

Every month in Maui

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

Historical clear-sky % for Maui, all months, ERA5 2018–2025.
Month	% Clear	Sample (n)
January	25%	n=248	All destinations →
February	16%	n=226	All destinations →
March	15%	n=248	All destinations →
April	19%	n=240	All destinations →
May	26%	n=248	All destinations →
June	40%	n=240	All destinations →
July	33%	n=248	All destinations →
August	43%	n=248	All destinations →
September	34%	n=240	All destinations →
October	28%	n=248	All destinations →
November ← this page	30%	n=240	All destinations →
December	30%	n=248	All destinations →

Frequently asked

Does it rain in Maui in November?

Sometimes. Maui sees measurable rain on 40% of days in November historically (n=240 days, ERA5 2018–2025) — not frequent enough to plan around, but not negligible either.

Is Maui good for sun in November?

It's mixed. Maui in November is clear on 30% of days historically (avg high 76°F, n=240 days, ERA5 2018–2025) — the outcome varies year to year.

How Maui compares in November

Head-to-head clear-sky comparisons against destinations travelers plausibly weigh against Maui this month — same passport tier, similar flight distance, both sides from the same 8-year ERA5 record.

→ Maui vs Lanai in November — Lanai is 31% clear historically
→ Maui vs Honolulu in November — Honolulu is 26% clear historically

→ Maui live forecast — this week’s actual 7-day weather, not historical
→ Best destinations in November — all destinations ranked by November clear-sky %
→ All destinations
→ Raw data (JSON) — buckets, n, source

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.