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 88.8°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 | 88.8°F | 88.8°F |
| Naples | 88.1°F | 88.7°F |
| New Orleans | 88.0°F | 87.4°F |
| Houston | 87.8°F | 87.8°F |
| Miami | 87.3°F | 88.1°F |
| Bay Saint Louis | 87.2°F | 86.6°F |
| Miami Beach | 87.1°F | 87.9°F |
| Sarasota | 87.1°F | 88.6°F |
| Siesta Key | 87.1°F | 88.6°F |
| Pensacola | 86.9°F | 86.5°F |
| Clearwater Beach | 86.8°F | 88.5°F |
| Tampa | 86.8°F | 88.6°F |
| Fort Lauderdale | 86.8°F | 87.2°F |
| St. George Island | 86.7°F | 86.5°F |
| Corpus Christi | 86.5°F | 87.0°F |
| West Palm Beach | 86.4°F | 86.8°F |
| Pensacola Beach | 86.4°F | 86.6°F |
| Orange Beach | 86.3°F | 86.5°F |
| Panama City Beach | 86.3°F | 86.2°F |
| Hilton Head Island | 86.2°F | 85.0°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: 16:55
September 14, monday
1800
86°F
SW
4 mph
4 mph
2100
86°F
SW
6 mph
6 mph
September 15, tuesday
0000
86°F
W
8 mph
8 mph
0300
84°F
W
11 mph
11 mph
0600
84°F
NW
11 mph
11 mph
0900
84°F
W
11 mph
11 mph
1200
84°F
W
9 mph
9 mph
1500
86°F
W
8 mph
8 mph
