26.12
fri
fri
Day
73°F
SW 12 mph
Precip.
0%
0%
Night
66°F
SW 5 mph
Precip.
0%
0%
27.12
sat
sat
Day
70°F
SW 7 mph
Precip.
0%
0%
Night
64°F
SW 6 mph
Precip.
0%
0%
28.12
sun
sun
Day
68°F
W 7 mph
Precip.
0%
0%
Night
72°F
W 9 mph
Precip.
0%
0%
29.12
mon
mon
Day
73°F
W 6 mph
Precip.
0%
0%
Night
72°F
S 7 mph
Precip.
0%
0%
30.12
tue
tue
Day
72°F
S 7 mph
Precip.
0%
0%
Night
70°F
S 12 mph
Precip.
22%
22%
31.12
wed
wed
Day
66°F
S 16 mph
Precip.
0%
0%
Night
66°F
NE 14 mph
Precip.
0%
0%
01.01
thu
thu
Day
64°F
S 13 mph
Precip.
0%
0%
Night
68°F
S 11 mph
Precip.
0%
0%
02.01
fri
fri
Day
66°F
S 12 mph
Precip.
0%
0%
Night
68°F
NE 12 mph
Precip.
0%
0%
03.01
sat
sat
Day
66°F
S 11 mph
Precip.
0%
0%
Night
70°F
S 14 mph
Precip.
0%
0%
04.01
sun
sun
Day
68°F
SW 13 mph
Precip.
0%
0%
Night
72°F
SW 14 mph
Precip.
0%
0%
05.01
mon
mon
Day
70°F
SW 12 mph
Precip.
47%
47%
Night
73°F
W 19 mph
Precip.
100%
100%
06.01
tue
tue
Day
73°F
W 19 mph
Precip.
0%
0%
Night
73°F
W 20 mph
Precip.
43%
43%
07.01
wed
wed
Day
75°F
W 16 mph
Precip.
66%
66%
Night
75°F
W 19 mph
Precip.
46%
46%
sea water
temperature
temperature
| Key West |
monthly
weather
weather
| Key West |
current
weather
weather
| Key West |
7 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 76.3°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: 02:19
December 26, friday
0300
72°F
S
16 mph
16 mph
0600
72°F
S
16 mph
16 mph
0900
72°F
SW
14 mph
14 mph
1200
73°F
SW
12 mph
12 mph
1500
73°F
SW
9 mph
9 mph
1800
70°F
SW
6 mph
6 mph
2100
68°F
S
4 mph
4 mph
December 27, saturday
0000
66°F
SW
5 mph
5 mph
