Key West weather by month & the best time to visit
🇺🇸 United States · beach resort · tropical — wet & dry seasons climate
The best time to visit Key West is March — its sunniest month (Sunshine Score 92/100), with January and February close behind. Key West averages about 2,953 hours of sunshine a year. Daytime highs around 24°C / 75°F and roughly 26 mm of rain in March.
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- Sun hours / year
- 2,953
- Sunniest month
- March
- Peak score
- 92/100
- Rain / year
- 1,054 mm
- Midday UV at peak
- 10 (very high)
- Sea at warmest
- 31°C / 88°F
- Population
- 26k
- Elevation
- Sea level
When is the best time to visit Key West?
For sunshine, the best time to visit Key West is March, then January and February. The dullest month is June (69/100, 157 mm of rain). The full month-by-month picture is in the table below.
How sunny is Key West?
Key West gets a lot of sun: around 2,953 hours a year. March (92/100) is noticeably better than June (69). It ranks #95 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. Rain has a clear season: the wettest stretch, around August, carries about 44% of the annual 1,054 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 90 | 23° / 73°F | 21° / 70°F | 33 mm | 6 | 24° / 75°F |
| February | 90 | 23° / 73°F | 22° / 72°F | 34 mm | 7 | 23° / 73°F |
| March | 92 | 24° / 75°F | 23° / 73°F | 26 mm | 9 | 26° / 79°F |
| April | 88 | 26° / 79°F | 24° / 75°F | 44 mm | 10 | 26° / 79°F |
| May | 79 | 27° / 81°F | 26° / 79°F | 96 mm | 10 | 29° / 84°F |
| June | 69 | 29° / 84°F | 28° / 82°F | 157 mm | 10 | 30° / 86°F |
| July | 73 | 30° / 86°F | 29° / 84°F | 127 mm | 10 | 31° / 88°F |
| August | 69 | 30° / 86°F | 29° / 84°F | 156 mm | 10 | 31° / 88°F |
| September | 69 | 29° / 84°F | 28° / 82°F | 177 mm | 9 | 31° / 88°F |
| October | 75 | 28° / 82°F | 27° / 81°F | 116 mm | 8 | 29° / 84°F |
| November | 88 | 26° / 79°F | 24° / 75°F | 49 mm | 6 | 27° / 81°F |
| December | 89 | 24° / 75°F | 23° / 73°F | 39 mm | 5 | 25° / 77°F |
Sea temperature in Key West by month
The sea off Key West is warmest in July at around 31°C / 88°F, and coolest in February at 23°C / 73°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Key West on the interactive sunshine globe →
Nearby places for sunshine
- Havana Cuba · 186 km · best in Mar · 2,871 h sun/yr
- Miami United States · 202 km · best in Jan · 2,653 h sun/yr
- Fort Myers United States · 220 km · best in Jan · 2,702 h sun/yr
- Punta Gorda United States · 264 km · best in Nov · 2,701 h sun/yr
- West Palm Beach United States · 289 km · best in Jan · 2,503 h sun/yr
- Sarasota/Bradenton United States · 325 km · best in Nov · 2,819 h sun/yr
Nearest destinations
- Matanzas Cuba · 172 km · 2,823 h sun/yr · best in Jan
- South Bimini Bahamas · 282 km · 2,857 h sun/yr · best in Feb
Head-to-head
How Key West compares month by month: Key West vs Miami · Key West vs Havana · Key West vs Fort Myers · all comparisons
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