World Resorts USA Key West Weather

Key West weather in December

Weather in Key West: December

Average day temperature: 75.4°F
Average night temperature: 72.3°F
Sea water temperature: 75.7°F
Number of sunny days: 11 days
Day length: 10.6 - 10.7 hours
Number of rainy days: 2 days
Precipitation totals: 1.1 in.

Air temperature in December, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
13
26
39
52
65
78
91
Day temperature   
Night temperature

The highest day temperature during December of 2024 was 76°F. At the same time the lowest night temperature was 65°F. Day and night temperature averages during December were 71.2°F and 70.4°F.

Sea water temperature in Key West in December, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
66
69
72
75
78
81
84
87

The average sea water temperature in December of 2024 was 72.6°F. The highest and lowest sea temperatures during the month were 75.9°F and 70.3°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
35%
35%
29%

Number of sunny, partly cloudy and cloudy days in December is almost equal.

Precipitation total in December, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.0
2.0
3.0
3.9
4.9
5.9
6.9
1.9
3.9
5.8
4.8
5.3
4.3
4.4
1.4
1.0
1.3
1.2
1.9
3.9
5.8
4.8
5.3
4.3
4.4
1.4
1.0
1.3

Precipitation total value in Key West in December is 1.2 in. Other months of the year show relatively similar values.

Wind speed in December, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.4
4.9
7.3
9.8
12.2
14.6
17.1
14.2
14.0
10.3
10.8
10.1
10.0
11.4
13.0
13.7
13.0
13.7
13.6
14.2
14.0
10.3
10.8
10.1
10.0
11.4
13.0
13.7
13.0
13.7

The average wind speed value in December is 13.6 mph

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.5
3.0
4.5
6.1
7.6
9.1
10.6
6.3
7.0
7.1
7.0
7.3
7.4
8.8
8.0
7.7
6.8
5.8
6.1
6.3
7.0
7.1
7.0
7.3
7.4
8.8
8.0
7.7
6.8
5.8

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 December is: 6.1.

Best time for vacation in Key West

Sunniest months:
March 16 days
April 16 days
May 16 days
Warmest months:
August 87.5 °F
July 87.0 °F
September 85.8 °F
Warmest sea temp:
August 87.0 °F
July 86.5 °F
September 86.0 °F
Coldest months:
January 72.1 °F
February 74.0 °F
December 75.4 °F
Rainiest months:
August 7 days
July 7 days
September 7 days
Windiest months:
November 14.7 mph
December 13.9 mph
January 13.8 mph

Key West on a weather map

Leaflet | Tiles © Esri
Places in USA:
Name
°F
+37°F
+63°F
+72°F
+72°F
+50°F
+54°F
+75°F
+59°F
+70°F
+55°F
+46°F
+70°F
+70°F
+70°F
+59°F
24 Hours Forecast
Key West
Local time: 10:26
March 29, saturday
1200
75°F
W
22 mph
1500
77°F
W
22 mph
1800
79°F
W
23 mph
2100
77°F
W
22 mph
March 30, sunday
0000
75°F
W
22 mph
0300
75°F
NW
19 mph
0600
75°F
NW
19 mph
0900
75°F
NW
17 mph
Units of measurement: °C / °F