23.12
tue
tue
Day
77°F
W 20 mph
Precip.
0%
0%
Night
73°F
W 21 mph
Precip.
0%
0%
24.12
wed
wed
Day
72°F
SW 18 mph
Precip.
0%
0%
Night
72°F
W 18 mph
Precip.
0%
0%
25.12
thu
thu
Day
72°F
SW 17 mph
Precip.
0%
0%
Night
75°F
W 12 mph
Precip.
83%
83%
26.12
fri
fri
Day
73°F
W 11 mph
Precip.
86%
86%
Night
73°F
SW 10 mph
Precip.
100%
100%
27.12
sat
sat
Day
73°F
SW 6 mph
Precip.
0%
0%
Night
75°F
SW 11 mph
Precip.
26%
26%
28.12
sun
sun
Day
75°F
W 14 mph
Precip.
100%
100%
Night
75°F
W 9 mph
Precip.
22%
22%
29.12
mon
mon
Day
73°F
SW 10 mph
Precip.
0%
0%
Night
73°F
S 9 mph
Precip.
0%
0%
sea water
temperature
temperature
| Key West |
monthly
weather
weather
| Key West |
current
weather
weather
| Key West |
14 days
forecast
forecast
| Key West |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 76.4°F. The highest and lowest sea temperatures during the month were 79.3°F and 74.1°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
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.
Air temperature in Key West, °F
Precipitation total in Key West, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Key West
Key West on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Key West
Local time: 12:40
December 23, tuesday
1500
77°F
W
19 mph
19 mph
1800
77°F
W
21 mph
21 mph
2100
73°F
W
22 mph
22 mph
December 24, wednesday
0000
73°F
W
21 mph
21 mph
0300
73°F
W
17 mph
17 mph
0600
73°F
SW
20 mph
20 mph
0900
72°F
SW
22 mph
22 mph
1200
72°F
SW
18 mph
18 mph
