20.12
sat
sat
Day
72°F
SW 15 mph
Precip.
0%
0%
Night
72°F
W 14 mph
Precip.
0%
0%
21.12
sun
sun
Day
72°F
SW 16 mph
Precip.
0%
0%
Night
70°F
SW 19 mph
Precip.
0%
0%
22.12
mon
mon
Day
72°F
SW 22 mph
Precip.
0%
0%
Night
73°F
SW 24 mph
Precip.
68%
68%
23.12
tue
tue
Day
75°F
W 25 mph
Precip.
76%
76%
Night
75°F
SW 22 mph
Precip.
0%
0%
24.12
wed
wed
Day
73°F
SW 21 mph
Precip.
0%
0%
Night
73°F
W 22 mph
Precip.
28%
28%
25.12
thu
thu
Day
73°F
W 22 mph
Precip.
25%
25%
Night
75°F
W 21 mph
Precip.
67%
67%
26.12
fri
fri
Day
73°F
W 16 mph
Precip.
70%
70%
Night
73°F
W 19 mph
Precip.
100%
100%
27.12
sat
sat
Day
73°F
SW 17 mph
Precip.
0%
0%
Night
73°F
W 17 mph
Precip.
0%
0%
28.12
sun
sun
Day
73°F
SW 13 mph
Precip.
0%
0%
Night
73°F
W 14 mph
Precip.
0%
0%
29.12
mon
mon
Day
73°F
W 14 mph
Precip.
0%
0%
Night
75°F
NW 9 mph
Precip.
22%
22%
30.12
tue
tue
Day
75°F
E 12 mph
Precip.
0%
0%
Night
70°F
SE 22 mph
Precip.
0%
0%
31.12
wed
wed
Day
70°F
SW 24 mph
Precip.
75%
75%
Night
70°F
SW 27 mph
Precip.
0%
0%
01.01
thu
thu
Day
68°F
SW 21 mph
Precip.
23%
23%
Night
70°F
SW 22 mph
Precip.
21%
21%
02.01
fri
fri
Day
70°F
SW 20 mph
Precip.
20%
20%
Night
72°F
W 20 mph
Precip.
27%
27%
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 76.5°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: 19:30
December 20, saturday
2100
72°F
W
15 mph
15 mph
December 21, sunday
0000
72°F
W
14 mph
14 mph
0300
70°F
W
12 mph
12 mph
0600
70°F
SW
14 mph
14 mph
0900
70°F
SW
16 mph
16 mph
1200
72°F
SW
16 mph
16 mph
1500
72°F
SW
14 mph
14 mph
1800
70°F
W
14 mph
14 mph
