Average sea water temperature in August:
+87.5°F
| Minimum sea water temperature in August: | 91.4°F |
| Maximum sea water temperature in August: | 85.5°F |
Daily sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 87.1°F. The highest and lowest sea temperatures during the month were 88.3°F and 85.5°F.
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| Siesta Key |
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Monthly sea water temperature in Siesta Key, °F
Which USA resorts have warmest sea in August?
| Place name | August 2026 | August 2025 |
|---|---|---|
| Key West | 88.8°F | 88.8°F |
| Key Largo | 88.4°F | 88.7°F |
| Naples | 88.1°F | 88.7°F |
| New Orleans | 88.0°F | 87.4°F |
| Houston | 87.8°F | 87.8°F |
| Cape Coral | 87.6°F | 88.7°F |
| Miami | 87.3°F | 88.1°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. Petersburg | 86.7°F | 88.7°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 |
Best time for vacation in Siesta Key
Siesta Key on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Siesta Key
Local time: 05:19
September 19, saturday
0600
77°F
W
7 mph
7 mph
0900
79°F
W
7 mph
7 mph
1200
84°F
W
5 mph
5 mph
1500
84°F
E
9 mph
9 mph
1800
86°F
SE
2 mph
2 mph
2100
82°F
W
5 mph
5 mph
September 20, sunday
0000
81°F
W
9 mph
9 mph
0300
79°F
W
9 mph
9 mph
