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SunnyDays

ERA5 almanac — 8 years of real data

Key West in February

Key West in February: 21% of days see measurable rain, 74°F average high, 37% of days historically clear (n=226, ERA5 2018–2025).

Key West in February is historically a poor month for sun: only 37% of days clear across 8 years (n=226, avg high 74°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 Key West 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 February

Clear-sky percentage for Key West in February, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early February
1st–15th		 38% n=120 74°F
Late February
16th–end		 35% n=106 74°F
Full month average 37% n=226 74°F

Sunshine & warmth in February

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 Key West in February. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early February
1st–15th		 76% n=120
Late February
16th–end		 87% n=106
Full month average 81% n=226
10.9 h median sunshine per day 92% of days exceed 8 h sunshine 21% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 37%. Sunshine-based “warm & sunny”: 81%. The 44-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

Key West is mostly overcast in February historically: only 37% of days are clear across 8 years (n=226), avg high 74°F. Most visitors this month will see more clouds than sun.

Every month in Key West

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

Historical clear-sky % for Key West, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 27% n=248 All destinations →
February ← this page 37% n=226 All destinations →
March 45% n=248 All destinations →
April 44% n=240 All destinations →
May 33% n=248 All destinations →
June 14% n=240 All destinations →
July 17% n=248 All destinations →
August 13% n=248 All destinations →
September 11% n=240 All destinations →
October 13% n=248 All destinations →
November 30% n=240 All destinations →
December 41% n=248 All destinations →

Frequently asked

Does it rain in Key West in February?

Sometimes. Key West sees measurable rain on 21% of days in February historically (n=226 days, ERA5 2018–2025) — not frequent enough to plan around, but not negligible either.

Is Key West good for sun in February?

It's mixed. Key West in February is clear on 37% of days historically (avg high 74°F, n=226 days, ERA5 2018–2025) — the outcome varies year to year.

How Key West compares in February

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

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.