SunFinder.ai

Key West, USA

93sun score

tropical climate · beach · high crowds · premium prices

🏊 Swimmable sea this month (≥22°C)

There are 127 tropical destinations in our catalog, and Key West's numbers hold their own: a 96/100 sun score at its April peak, when rain interrupts roughly 21% of days. For a sand-and-sea holiday at a tropical latitude, the data is a good starting point.

The year runs from average lows of 20°C in January to highs of 30°C in August. Rain is most likely in September, when about 64% of days see meaningful rainfall, and least likely in March (13%). The genuinely warm window — average highs of 24°C or better — covers March–December.

Season by season (on the northern calendar), spring brings 26°C highs with 23% rain-day odds, summer 30°C at 54%, autumn 28°C at 47%, and winter 23°C at 21%. That makes spring the statistical sweet spot (season score 94), with summer a workable second; autumn is where the odds thin out. For warmth without the densest crowds, the shoulder play is March: still 24°C highs, with a sun score of 92.

Best months to visit Key West

The best month on record is April — a 96/100 sun score, built on 34% cloud cover and 21% rain-day odds — followed by July and May. Anything in January–December clears our 70-point reliability bar. The month to avoid on pure weather odds is September (84/100).

Among the tropical destinations in our catalog, its April rain odds beat 90% of the field.

Month-by-month breakdown for Key West → · More destinations for April →

Right now the 15-day outlook shows 7 mostly-clear days (under 40% cloud) and none with real rain risk, with temperatures between 22°C and 29°C — which is how Key West earns its current 93/100 sun score.

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Flights from Europe

FromDistanceEstimated non-stop time
Brussels (BRU)7,654 km~10 hFind flights →
Amsterdam (AMS)7,652 km~10 hFind flights →
London (LON)7,333 km~9 h 45Find flights →
Paris (PAR)7,564 km~10 hFind flights →
Frankfurt (FRA)7,971 km~10 h 30Find flights →

Estimates from distance; actual schedules may require a connection.

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Next 16 days

Live forecast, refreshed twice daily. Forecasts updated 29 Oct, 06:35 CET.

DateHigh / lowCloudRain odds
Thu 29 Oct29° / 25°11%2%
Fri 30 Oct28° / 24°49%8%
Sat 31 Oct27° / 26°29%16%
Sun 1 Nov27° / 26°92%33%
Mon 2 Nov27° / 26°88%21%
Tue 3 Nov27° / 26°17%5%
Wed 4 Nov27° / 26°4%6%
Thu 5 Nov26° / 26°9%9%
Fri 6 Nov26° / 25°18%12%
Sat 7 Nov25° / 24°35%9%
Sun 8 Nov24° / 22°84%9%
Mon 9 Nov24° / 22°76%17%
Tue 10 Nov24° / 23°100%25%
Wed 11 Nov24° / 23°100%26%
Thu 12 Nov24° / 24°41%23%

Key West climate, month by month

2015–2024 averages (April highlighted as the best month).

MonthDay / night °CCloudRain-day oddsSun score
January22.7° / 20.2°51.1%23.9%89
February23.5° / 21.6°33.3%19%92
March24.4° / 22.5°33.5%13.4%92
April25.7° / 24°34%21%96
May27.4° / 25.5°40.7%35.8%93
June28.9° / 26.7°62.8%53.7%89
July29.8° / 27.5°59.2%51.3%94
August29.9° / 27.6°62%57.1%90
September29.3° / 27°58.1%63.7%84
October27.9° / 25.8°51.3%51.3%85
November25.8° / 23.9°43.5%25.7%88
December24.1° / 22°43.1%21%89

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