21.07
tue
tue
Day
90°F
NW 16 mph
Precip.
7%
7%
Night
84°F
NW 14 mph
Precip.
7%
7%
22.07
wed
wed
Day
84°F
NW 15 mph
Precip.
8%
8%
Night
84°F
W 19 mph
Precip.
6%
6%
23.07
thu
thu
Day
84°F
W 12 mph
Precip.
8%
8%
Night
86°F
W 17 mph
Precip.
12%
12%
24.07
fri
fri
Day
86°F
W 11 mph
Precip.
13%
13%
Night
84°F
NW 16 mph
Precip.
10%
10%
25.07
sat
sat
Day
84°F
NW 5 mph
Precip.
5%
5%
Night
86°F
SW 6 mph
Precip.
5%
5%
26.07
sun
sun
Day
84°F
SE 6 mph
Precip.
7%
7%
Night
84°F
E 5 mph
Precip.
6%
6%
27.07
mon
mon
Day
84°F
E 4 mph
Precip.
9%
9%
Night
84°F
E 5 mph
Precip.
6%
6%
sea water
temperature
temperature
| Key West |
monthly
weather
weather
| Key West |
current
weather
weather
| Key West |
14 days
forecast
forecast
| Key West |
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 88.8°F. The highest and lowest sea temperatures during the month were 90.0°F and 87.8°F.
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: 04:50
July 21, tuesday
0600
84°F
NW
17 mph
17 mph
0900
86°F
NW
19 mph
19 mph
1200
90°F
NW
16 mph
16 mph
1500
84°F
NW
9 mph
9 mph
1800
84°F
W
9 mph
9 mph
2100
84°F
W
13 mph
13 mph
July 22, wednesday
0000
84°F
NW
14 mph
14 mph
0300
84°F
NW
14 mph
14 mph
