Average sea water temperature in August:
+87.2°F
| Minimum sea water temperature in August: | 91.4°F |
| Maximum sea water temperature in August: | 83.5°F |
Daily sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 88.6°F. The highest and lowest sea temperatures during the month were 90.5°F and 87.1°F.
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Monthly sea water temperature in Key West, °F
Which USA resorts have warmest sea in August?
| Place name | August 2026 | August 2025 |
|---|---|---|
| Key West | 88.6°F | 88.8°F |
| New Orleans | 88.3°F | 87.4°F |
| Naples | 87.9°F | 88.7°F |
| Houston | 87.8°F | 87.8°F |
| Miami | 87.2°F | 88.1°F |
| Miami Beach | 86.9°F | 87.9°F |
| Clearwater Beach | 86.9°F | 88.5°F |
| Sarasota | 86.9°F | 88.6°F |
| St. George Island | 86.8°F | 86.5°F |
| Tampa | 86.8°F | 88.6°F |
| Fort Lauderdale | 86.8°F | 87.2°F |
| Pensacola Beach | 86.6°F | 86.6°F |
| Panama City Beach | 86.4°F | 86.2°F |
| West Palm Beach | 86.3°F | 86.8°F |
| Hilton Head Island | 86.3°F | 85.0°F |
| Santa Rosa Beach | 86.3°F | 85.9°F |
| Destin | 86.1°F | 86.0°F |
| Tybee Island | 86.1°F | 84.5°F |
| Fort Walton Beach | 85.9°F | 86.0°F |
| Charleston (SC) | 85.6°F | 84.1°F |
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: 16:15
August 25, tuesday
1800
86°F
W
9 mph
9 mph
2100
86°F
W
13 mph
13 mph
August 26, wednesday
0000
86°F
NW
15 mph
15 mph
0300
86°F
NW
16 mph
16 mph
0600
86°F
NW
13 mph
13 mph
0900
86°F
NW
12 mph
12 mph
1200
86°F
NW
14 mph
14 mph
1500
86°F
W
11 mph
11 mph
