Measurements:
°C
°F
CURRENT WEATHER
16:09
Key West
76°F
S 6 mph
Feels like: 80°F
Precip: 0%
World Resorts USA Key West

Annual Weather

Key West Air Temperature, °F

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
15
30
45
60
75
90
105
120
78.2
81.4
86.5
89.8
91.7
91.1
88.7
85.2
82.2
78.4
76.6
74.5
74.8
77.5
82.8
86.1
86.8
86.6
84.9
81.9
78.8
75.0
72.9
71.5
Day Temperature   
Night Temperature
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
15
30
45
60
75
90
105
120
78.5
82
86.8
90
91.1
90.6
88.4
85.5
82
78.6
76.3
75.7

Precipitation Totals, in

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
0.9
1.7
2.6
3.4
4.3
5.1
6.0
6.8
1.1
1.6
3.8
5
4.2
4.4
3.9
3.9
1.4
0.6
0.9
1.2

Rainy Days During the Year

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
1
2
3
4
5
6
7
8
2
3
6
7
7
7
7
5
2
1
1
2
Average Wind Speed, mph
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
2.5
5.0
7.6
10.1
12.6
15.1
17.7
20.2
13.9
14.7
13.6
9.9
10.6
10
10.3
11.7
12.8
13.7
12.9
13.8
Sunny, Cloudy and Gloomy Days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
5
10
15
20
25
30
35
9
8
7
6
6
4
6
5
4
4
6
9
11
10
13
13
15
15
13
10
10
11
10
12
11
12
11
11
10
12
11
16
16
16
12
10
Gloomy days   
Cloudy days   
Sunny days
Average Sunny Hours Per Day
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.5
3.0
4.6
6.1
7.6
9.1
10.6
12.1
6
6.4
6.8
7.3
7.5
8.4
8.3
8.9
8.5
8.1
7.1
6.1

We are using day length and cloud cover information for each day of the month to calculate averages for this chart.

Best Time to Visit Key West
The most sunny months:
May 16 days
March 16 days
April 16 days
The most warm months:
August 91.7 °F
July 91.1 °F
September 89.8 °F
Warmest sea temperature:
August 91.2 °F
July 90.6 °F
September 90.0 °F
The most cold months:
January 74.5 °F
February 76.6 °F
December 78.2 °F
The most rainy months:
September 7 days
August 7 days
July 7 days
The most windy months:
November 14 mph
December 14 mph
January 14 mph
more details

Key West on the Weather Map

USA Resorts:
NAME
F°
Boston +40
Chicago +56
Hawaii +78
Honolulu +78
Houston +82
Las Vegas +84
Los Angeles +66
Miami +80
New York +56
Orlando +86
San Diego +66
San Francisco +54
Sarasota +82
Tampa +86
Washington +58
all resorts
24 Hours Weather Forecast
Key West
Local time: 16:09
13 apr, sunday
1800 78°F
S
5 mph
2100 76°F
SW
7 mph
14 apr, monday
0000 78°F
W
11 mph
0300 76°F
W
14 mph
0600 76°F
W
14 mph
0900 76°F
W
16 mph
1200 78°F
W
15 mph
1500 78°F
W
13 mph