Measurements:
°C
°F
CURRENT WEATHER
07:31
Key West
76°F
W 19 mph
Feels like: 80°F
Precip: 0%
World Resorts USA Key West Weather

14 Day Weather Forecast

12.18
thu
DAY
80°F
NW 19 mph
precip
0%
NIGHT
80°F
N 9 mph
precip
0%
12.19
fri
DAY
76°F
SE 11 mph
precip
0%
NIGHT
74°F
S 14 mph
precip
0%
12.20
sat
DAY
74°F
SW 11 mph
precip
0%
NIGHT
76°F
SW 7 mph
precip
0%
12.21
sun
DAY
76°F
SW 14 mph
precip
0%
NIGHT
76°F
SW 19 mph
precip
0%
12.22
mon
DAY
76°F
SW 19 mph
precip
0%
NIGHT
76°F
SW 24 mph
precip
0%
12.23
tue
DAY
76°F
W 23 mph
precip
0%
NIGHT
76°F
W 25 mph
precip
100%
12.24
wed
DAY
76°F
W 22 mph
precip
0%
NIGHT
76°F
W 20 mph
precip
0%
12.25
thu
DAY
76°F
W 16 mph
precip
0%
NIGHT
76°F
W 14 mph
precip
28%
12.26
fri
DAY
74°F
SW 17 mph
precip
55%
NIGHT
76°F
SW 8 mph
precip
0%
12.27
sat
DAY
74°F
S 12 mph
precip
0%
NIGHT
74°F
SE 6 mph
precip
0%
12.28
sun
DAY
74°F
NW 9 mph
precip
0%
NIGHT
74°F
NE 13 mph
precip
0%
12.29
mon
DAY
70°F
SW 13 mph
precip
0%
NIGHT
72°F
S 14 mph
precip
0%
12.30
tue
DAY
68°F
SW 16 mph
precip
0%
NIGHT
72°F
SW 14 mph
precip
0%
12.31
wed
DAY
72°F
SW 22 mph
precip
77%
NIGHT
72°F
SW 27 mph
precip
0%

Key West Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Key West was 79.7°F. The maximum and minimum values were 76.8°F and 82.6°F respectively.

Key West on the Weather Map

Best Time to Visit Key West
The most sunny months:
May 16 days
March 16 days
April 16 days
The most warm months:
August 91.6 °F
July 91.0 °F
September 89.7 °F
Warmest sea temperature:
August 91.3 °F
July 90.6 °F
September 90.1 °F
The most cold months:
January 74.5 °F
February 76.6 °F
December 78.2 °F
The most rainy months:
June 7 days
August 7 days
September 6 days
The most windy months:
November 14 mph
December 14 mph
January 14 mph
more details
USA Resorts:
NAME
F°
Chicago +44
Hawaii +76
Honolulu +76
Houston +64
Las Vegas +48
Los Angeles +54
Maui +70
Miami +74
Miami Beach +78
New York +30
San Diego +52
San Francisco +48
Sarasota +62
Tampa +62
Washington +28
all resorts
24 Hours Weather Forecast
Key West
Local time: 07:31
18 dec, thursday
0900 78°F
W
19 mph
1200 80°F
NW
19 mph
1500 80°F
NW
16 mph
1800 78°F
NW
11 mph
2100 80°F
NW
12 mph
19 dec, friday
0000 80°F
N
9 mph
0300 80°F
N
9 mph
0600 78°F
NE
9 mph