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 87.0°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 |
| New Orleans | 88.2°F | 87.4°F |
| Naples | 88.1°F | 88.7°F |
| Houston | 87.8°F | 87.8°F |
| Miami | 87.3°F | 88.1°F |
| Miami Beach | 87.0°F | 87.9°F |
| Sarasota | 87.0°F | 88.6°F |
| Clearwater Beach | 86.9°F | 88.5°F |
| Tampa | 86.8°F | 88.6°F |
| St. George Island | 86.8°F | 86.5°F |
| Pensacola Beach | 86.5°F | 86.6°F |
| West Palm Beach | 86.4°F | 86.8°F |
| Panama City Beach | 86.4°F | 86.2°F |
| Hilton Head Island | 86.3°F | 85.0°F |
| Santa Rosa Beach | 86.2°F | 85.9°F |
| Edisto Beach | 86.1°F | 84.3°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) | 85.5°F | 84.1°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: 20:40
August 29, saturday
2100
81°F
S
8 mph
8 mph
August 30, sunday
0000
79°F
SW
9 mph
9 mph
0300
81°F
W
6 mph
6 mph
0600
81°F
W
7 mph
7 mph
0900
82°F
W
7 mph
7 mph
1200
90°F
NW
6 mph
6 mph
1500
90°F
NE
7 mph
7 mph
1800
81°F
W
5 mph
5 mph
