Current sea water temperature:
+73.6°F
| Minimum sea water temperature in February: | 78.4°F |
| Maximum sea water temperature in February: | 64.2°F |
| Average sea water temperature in February: | 73.4°F |
| more information | |
14 days
forecast
forecast
| Key West |
monthly
weather
weather
| Key West |
Sea water temperature for the last 10 days:
| February 23 | 73.6°F | February 18 | 72.1°F |
| February 22 | 74.8°F | February 17 | 72.0°F |
| February 21 | 75.0°F | February 16 | 71.1°F |
| February 20 | 73.4°F | February 15 | 69.6°F |
| February 19 | 72.7°F | February 14 | 69.1°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
February
February
| 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: 10:55
February 23, monday
1200
61°F
S
26 mph
26 mph
1500
59°F
SE
25 mph
25 mph
1800
61°F
SE
25 mph
25 mph
2100
59°F
S
25 mph
25 mph
February 24, tuesday
0000
59°F
S
24 mph
24 mph
0300
57°F
S
23 mph
23 mph
0600
55°F
S
21 mph
21 mph
0900
55°F
S
19 mph
19 mph
