16.08
sun
sun
Day
63°F
NE 17 mph
Precip.
14%
14%
Night
63°F
N 34 mph
Precip.
22%
22%
17.08
mon
mon
Day
61°F
N 27 mph
Precip.
12%
12%
Night
61°F
N 27 mph
Precip.
18%
18%
18.08
tue
tue
Day
61°F
NW 21 mph
Precip.
12%
12%
Night
63°F
NW 17 mph
Precip.
5%
5%
19.08
wed
wed
Day
63°F
W 19 mph
Precip.
7%
7%
Night
64°F
NW 18 mph
Precip.
9%
9%
20.08
thu
thu
Day
64°F
NW 23 mph
Precip.
8%
8%
Night
64°F
NW 21 mph
Precip.
7%
7%
21.08
fri
fri
Day
64°F
NW 20 mph
Precip.
7%
7%
Night
64°F
NW 20 mph
Precip.
9%
9%
22.08
sat
sat
Day
64°F
N 13 mph
Precip.
11%
11%
Night
63°F
NW 13 mph
Precip.
8%
8%
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 August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 88.2°F. The highest and lowest sea temperatures during the month were 89.2°F and 87.1°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: 19:42
August 16, sunday
2100
63°F
N
35 mph
35 mph
August 17, monday
0000
63°F
N
34 mph
34 mph
0300
61°F
N
34 mph
34 mph
0600
63°F
N
31 mph
31 mph
0900
61°F
N
30 mph
30 mph
1200
61°F
N
27 mph
27 mph
1500
61°F
N
22 mph
22 mph
1800
63°F
N
25 mph
25 mph
