20.07
mon
mon
Day
90°F
N 14 mph
Precip.
5%
5%
Night
84°F
NW 13 mph
Precip.
7%
7%
21.07
tue
tue
Day
84°F
NW 16 mph
Precip.
10%
10%
Night
84°F
NW 15 mph
Precip.
10%
10%
22.07
wed
wed
Day
84°F
NW 15 mph
Precip.
9%
9%
Night
84°F
W 19 mph
Precip.
7%
7%
23.07
thu
thu
Day
84°F
W 13 mph
Precip.
7%
7%
Night
84°F
W 17 mph
Precip.
8%
8%
24.07
fri
fri
Day
84°F
W 11 mph
Precip.
17%
17%
Night
84°F
NW 14 mph
Precip.
12%
12%
25.07
sat
sat
Day
84°F
NW 9 mph
Precip.
8%
8%
Night
84°F
W 6 mph
Precip.
6%
6%
26.07
sun
sun
Day
84°F
E 4 mph
Precip.
9%
9%
Night
84°F
SE 4 mph
Precip.
12%
12%
27.07
mon
mon
Day
84°F
E 7 mph
Precip.
12%
12%
Night
82°F
W 2 mph
Precip.
10%
10%
28.07
tue
tue
Day
84°F
NE 5 mph
Precip.
9%
9%
Night
84°F
NW 4 mph
Precip.
4%
4%
29.07
wed
wed
Day
84°F
NE 6 mph
Precip.
5%
5%
Night
84°F
W 9 mph
Precip.
5%
5%
30.07
thu
thu
Day
84°F
W 3 mph
Precip.
6%
6%
Night
86°F
W 9 mph
Precip.
5%
5%
31.07
fri
fri
Day
84°F
W 9 mph
Precip.
23%
23%
Night
86°F
W 9 mph
Precip.
8%
8%
01.08
sat
sat
Day
84°F
NW 7 mph
Precip.
10%
10%
Night
84°F
SW 7 mph
Precip.
7%
7%
02.08
sun
sun
Day
84°F
NW 6 mph
Precip.
9%
9%
Night
86°F
SW 5 mph
Precip.
6%
6%
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 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: 19:52
July 20, monday
2100
86°F
NW
10 mph
10 mph
July 21, tuesday
0000
84°F
NW
13 mph
13 mph
0300
84°F
NW
15 mph
15 mph
0600
84°F
NW
18 mph
18 mph
0900
84°F
NW
20 mph
20 mph
1200
84°F
NW
16 mph
16 mph
1500
84°F
NW
13 mph
13 mph
1800
84°F
NW
11 mph
11 mph
