09.08
sun
sun
Day
90°F
NW 16 mph
Precip.
5%
5%
Night
86°F
W 21 mph
Precip.
8%
8%
10.08
mon
mon
Day
86°F
NW 16 mph
Precip.
14%
14%
Night
86°F
W 19 mph
Precip.
11%
11%
11.08
tue
tue
Day
84°F
W 14 mph
Precip.
9%
9%
Night
86°F
W 14 mph
Precip.
5%
5%
12.08
wed
wed
Day
86°F
W 10 mph
Precip.
10%
10%
Night
84°F
W 12 mph
Precip.
5%
5%
13.08
thu
thu
Day
84°F
NW 8 mph
Precip.
9%
9%
Night
86°F
W 12 mph
Precip.
4%
4%
14.08
fri
fri
Day
84°F
W 11 mph
Precip.
11%
11%
Night
86°F
W 19 mph
Precip.
51%
51%
15.08
sat
sat
Day
86°F
NW 17 mph
Precip.
10%
10%
Night
86°F
W 22 mph
Precip.
6%
6%
16.08
sun
sun
Day
86°F
W 15 mph
Precip.
10%
10%
Night
84°F
W 15 mph
Precip.
10%
10%
17.08
mon
mon
Day
84°F
W 9 mph
Precip.
21%
21%
Night
84°F
SW 4 mph
Precip.
6%
6%
18.08
tue
tue
Day
86°F
S 12 mph
Precip.
57%
57%
Night
81°F
E 6 mph
Precip.
17%
17%
19.08
wed
wed
Day
84°F
W 7 mph
Precip.
8%
8%
Night
84°F
NW 12 mph
Precip.
14%
14%
20.08
thu
thu
Day
84°F
N 11 mph
Precip.
9%
9%
Night
84°F
NW 6 mph
Precip.
9%
9%
21.08
fri
fri
Day
86°F
NW 4 mph
Precip.
9%
9%
Night
86°F
W 7 mph
Precip.
8%
8%
22.08
sat
sat
Day
86°F
W 11 mph
Precip.
10%
10%
Night
86°F
W 12 mph
Precip.
11%
11%
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 August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 88.8°F. The highest and lowest sea temperatures during the month were 90.7°F and 86.9°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: 21:29
August 10, monday
0000
86°F
W
21 mph
21 mph
0300
86°F
W
20 mph
20 mph
0600
86°F
NW
19 mph
19 mph
0900
84°F
NW
16 mph
16 mph
1200
86°F
NW
16 mph
16 mph
1500
86°F
W
13 mph
13 mph
1800
86°F
W
13 mph
13 mph
2100
86°F
W
17 mph
17 mph
