Current sea water temperature:
+88.9°F
| Minimum sea water temperature in June: | 90.3°F |
| Maximum sea water temperature in June: | 80.2°F |
| Average sea water temperature in June: | 84.8°F |
| more information | |
14 days
forecast
forecast
| Key West |
monthly
weather
weather
| Key West |
Sea water temperature for the last 10 days:
| June 25 | 88.9°F | June 20 | 88.5°F |
| June 24 | 90.3°F | June 19 | 87.3°F |
| June 23 | 89.1°F | June 18 | 87.8°F |
| June 22 | 87.1°F | June 17 | 87.4°F |
| June 21 | 88.2°F | June 16 | 87.3°F |
Monthly sea water temperature, °F
When is the warmest sea in Key West?
Based on the data about daily sea water temperature for the last three years the warmest sea in Key West was noticed in August, July and September.
Monthly Sea Temperatures in Key West, °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.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 86.7°F. The highest and lowest sea temperatures during the month were 88.0°F and 85.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 86.9°F. The highest and lowest sea temperatures during the month were 89.2°F and 85.3°F.
current
weather
weather
| Key West |
weather in
June
June
| Key West |
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: 03:06
June 26, friday
0600
84°F
NW
19 mph
19 mph
0900
86°F
NW
16 mph
16 mph
1200
90°F
NW
12 mph
12 mph
1500
88°F
W
12 mph
12 mph
1800
86°F
W
14 mph
14 mph
2100
86°F
W
16 mph
16 mph
June 27, saturday
0000
86°F
W
18 mph
18 mph
0300
86°F
W
16 mph
16 mph
