Weather in Key West: January
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Average day temperature: | 72.0°F |
| Average night temperature: | 69.3°F | |
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Sea water temperature: | 73.1°F |
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Number of sunny days: | 11 days |
| Day length: | 10.6 - 11.0 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.2 in. | |
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forecast
| Key West |
temperature
| Key West |
Air temperature in January, °F
The highest day temperature during January of 2026 was 77°F. At the same time the lowest night temperature was 59°F. Daily and nightly averages during January were 70.4°F and 68.1°F.
Sea water temperature in Key West in January, °F
The average sea water temperature in January of 2026 was 72.5°F. The highest and lowest sea temperatures during the month were 75.4°F and 68.7°F.
Number of sunny, partly cloudy and cloudy days in January is almost equal.
Precipitation total in January, in.
Precipitation total value in Key West in January is 1.0 in. Other months of the year show relatively similar values.
The average wind speed value in January is 13.5 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 6.0.
Best time for vacation in Key West
Key West on a weather map
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