Weather in Key West: January
 |
Average day temperature: | 72.1°F |
| Average night temperature: | 69.3°F | |
 |
Sea water temperature: | 73.2°F |
 |
Number of sunny days: | 10 days |
| Day length: | 10.6 - 11.0 hours | |
 |
Number of rainy days: | 2 days |
| Precipitation totals: | 1.2 in. | |
| more information | ||
forecast
| Key West |
temperature
| Key West |
Air temperature in January, °F
| Day temperature | Night temperature |
The highest day temperature during January of 2025 was 73°F. At the same time the lowest night temperature was 59°F. Day and night temperature averages during January were 67.4°F and 67.2°F.
Sea water temperature in Key West in January, °F
The average sea water temperature in January of 2025 was 70.3°F. The highest and lowest sea temperatures during the month were 75.6°F and 66.0°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
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 1.3 in. Other months of the year show relatively similar values.
The average wind speed value in January is 13.7 mph It makes January one of the most windy months of the year.
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: 5.8.
Best time for vacation in Key West
Key West on a weather map
22 mph
22 mph
23 mph
22 mph
22 mph
19 mph
19 mph
17 mph
