USA
Key West Climate & Weather Guide
Average temperatures, rainfall and conditions through the year, based on 20 years of historical data.
Climate Overview
Key West experiences its warmest weather in August, with average highs reaching 29.5°C (85.1°F). The coolest month is typically January, averaging 22.6°C (72.7°F). Rainfall is heaviest in September (around 137.3mm), while March tends to be the driest month of the year with approximately 27.6mm of precipitation.
29.5°C (85.1°F)
Hottest month avg high
22.6°C (72.7°F)
Coolest month avg high
137mm
Wettest month avg
28mm
Driest month avg
Temperature by Month
Rainfall by Month
Sunshine Hours
Monthly Averages
| Month | Avg High | Avg Low | Rainfall | Rainy Days | Sunshine |
|---|---|---|---|---|---|
| Jan | 22.6°C (72.7°F) | 20.4°C (68.7°F) | 36mm | 6 | 9.5h |
| Feb | 23°C (73.4°F) | 21.1°C (70°F) | 38.8mm | 5 | 10.2h |
| Mar | 23.8°C (74.8°F) | 22.1°C (71.8°F) | 27.6mm | 4 | 11h |
| Apr | 25.3°C (77.5°F) | 23.8°C (74.8°F) | 34.7mm | 5 | 12.2h |
| May | 26.9°C (80.4°F) | 25.3°C (77.5°F) | 73.3mm | 9 | 12.2h |
| Jun | 28.4°C (83.1°F) | 26.6°C (79.9°F) | 122.6mm | 14 | 11.5h |
What to Pack
Suggested packing for Key West's climate.
Versatile Layers
Light layers that work for both mild afternoons and cooler evenings.
Rain Protection
A compact umbrella and a light rain jacket for the wettest months.
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