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Weather & Climate
Key West, Florida, United States
Overview
Climate data and monthly weather averages for Key West.
Key Metrics
Annual Avg
25.9°C
Summer Avg
29°C
Winter Avg
22.5°C
Record High
31.4°C
Record Low
10.9°C
Annual Precipitation
1053.5 mm
Avg Humidity
77%
Summer Humidity
76%
Winter Humidity
79%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 26.5° | 21.8° | 10.9° | 32.6 | 78% | 119 | 55.4 |
| Feb | 26.2° | 22.4° | 11.8° | 34.2 | 80% | 134 | 52.7 |
| Mar | 27.2° | 23.3° | 15.8° | 26.3 | 77% | 183 | 50 |
| Apr | 28.9° | 25° | 17.2° | 44.4 | 76% | 198 | 43.9 |
| May | 29.1° | 26.6° | 22.7° | 95.8 | 76% | 207 | 47.9 |
| Jun | 30.6° | 28.4° | 25.5° | 156.9 | 78% | 188 | 49.2 |
| Jul | 31° | 29.1° | 26.5° | 127.1 | 75% | 197 | 92.8 |
| Aug | 31.4° | 29.5° | 26.6° | 155.9 | 75% | 189 | 76.5 |
| Sep | 30.9° | 28.9° | 24.5° | 176.7 | 77% | 161 | 114.6 |
| Oct | 30.2° | 27.6° | 19.5° | 115.9 | 77% | 148 | 94.5 |
| Nov | 28.9° | 25° | 17.9° | 48.9 | 76% | 123 | 62 |
| Dec | 27.1° | 23.4° | 13.8° | 38.8 | 79% | 113 | 55.8 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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