Measurements:
°C
°F
CURRENT WEATHER
17:39
Key West
90°F
W 9 mph
Feels like: 100°F
Precip: 5%
World Resorts USA Key West Weather

14 Day Weather Forecast

08.25
tue
DAY
90°F
W 12 mph
precip
13%
NIGHT
90°F
NW 15 mph
precip
61%
08.26
wed
DAY
90°F
NW 14 mph
precip
30%
NIGHT
92°F
W 20 mph
precip
30%
08.27
thu
DAY
90°F
NW 11 mph
precip
20%
NIGHT
90°F
W 15 mph
precip
61%
08.28
fri
DAY
90°F
NW 9 mph
precip
16%
NIGHT
90°F
W 15 mph
precip
15%
08.29
sat
DAY
90°F
NW 13 mph
precip
19%
NIGHT
90°F
W 18 mph
precip
9%
08.30
sun
DAY
90°F
NW 13 mph
precip
15%
NIGHT
92°F
W 14 mph
precip
16%
08.31
mon
DAY
90°F
NW 9 mph
precip
12%
NIGHT
92°F
W 14 mph
precip
7%
09.01
tue
DAY
90°F
W 7 mph
precip
28%
NIGHT
90°F
W 12 mph
precip
57%
09.02
wed
DAY
90°F
NW 6 mph
precip
6%
NIGHT
90°F
NW 9 mph
precip
6%
09.03
thu
DAY
88°F
NE 5 mph
precip
36%
NIGHT
90°F
E 4 mph
precip
7%
09.04
fri
DAY
90°F
E 5 mph
precip
5%
NIGHT
90°F
SE 4 mph
precip
6%
09.05
sat
DAY
88°F
E 7 mph
precip
17%
NIGHT
88°F
SE 7 mph
precip
8%
09.06
sun
DAY
88°F
SE 7 mph
precip
17%
NIGHT
88°F
SE 7 mph
precip
18%
09.07
mon
DAY
88°F
SE 5 mph
precip
14%
NIGHT
90°F
SE 6 mph
precip
6%

Key West Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Key West was 92.9°F. The maximum and minimum values were 91.2°F and 95.0°F respectively.

Key West on the Weather Map

Best Time to Visit Key West
The most sunny months:
May 17 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 91.4 °F
July 90.8 °F
September 90.1 °F
The most cold months:
January 74.4 °F
February 76.3 °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°
Boston +80
Chicago +80
Hawaii +84
Houston +106
Las Vegas +116
Los Angeles +96
Maui +70
Miami +92
Myrtle Beach +84
New York +82
San Diego +96
San Francisco +64
Santa Monica +86
Sarasota +92
Washington +84
all resorts
24 Hours Weather Forecast
Key West
Local time: 17:39
25 aug, tuesday
1800 90°F
W
9 mph
2100 90°F
W
13 mph
26 aug, wednesday
0000 90°F
NW
15 mph
0300 90°F
NW
16 mph
0600 90°F
NW
13 mph
0900 90°F
NW
12 mph
1200 90°F
NW
14 mph
1500 90°F
W
11 mph