Weather in Key West: March
 |
Average day temperature: | 75.6°F |
| Average night temperature: | 72.5°F | |
 |
Sea water temperature: | 75.8°F |
 |
Number of sunny days: | 16 days |
| Day length: | 11.7 - 12.4 hours | |
 |
Number of rainy days: | 1 day |
| Precipitation totals: | 0.6 in. | |
| more information | ||
forecast
| Key West |
temperature
| Key West |
Air temperature in March, °F
| Day temperature | Night temperature |
The highest day temperature during March of 2025 was 78°F. At the same time the lowest night temperature was 65°F. Day and night temperature averages during March were 73.1°F and 71.3°F.
Sea water temperature in Key West in March, °F
The average sea water temperature in March of 2025 was 74.3°F. The highest and lowest sea temperatures during the month were 77.2°F and 72.3°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
Mostly all days in March are sunny but cloudy days are also possible.
Precipitation total in March, in.
Precipitation total value in Key West in March is 0.6 in. Other months of the year show relatively similar values.
The average wind speed value in March is 13.7 mph It makes March 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 March is: 7.7.
Best time for vacation in Key West
Key West on a weather map
22 mph
22 mph
22 mph
23 mph
22 mph
22 mph
19 mph
19 mph
