Average sea water temperature in August:
+87.9°F
| Minimum sea water temperature in August: | 91.6°F |
| Maximum sea water temperature in August: | 84.0°F |
Daily sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 87.9°F. The highest and lowest sea temperatures during the month were 90.1°F and 86.0°F.
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Monthly sea water temperature in Grand Isle, °F
Which USA resorts have warmest sea in August?
| Place name | August 2025 | August 2024 |
|---|---|---|
| Key West | 88.8°F | 87.8°F |
| Naples | 88.7°F | 87.0°F |
| Tampa | 88.6°F | 86.4°F |
| Sarasota | 88.6°F | 87.2°F |
| Siesta Key | 88.6°F | 87.3°F |
| Clearwater Beach | 88.5°F | 87.0°F |
| Miami | 88.1°F | 86.4°F |
| Miami Beach | 87.9°F | 86.5°F |
| Houston | 87.8°F | 88.0°F |
| New Orleans | 87.4°F | 88.1°F |
| Fort Lauderdale | 87.2°F | 85.8°F |
| West Palm Beach | 86.8°F | 86.2°F |
| Cocoa Beach | 86.8°F | 84.5°F |
| Pensacola Beach | 86.6°F | 87.4°F |
| St. George Island | 86.5°F | 86.8°F |
| Panama City Beach | 86.2°F | 86.8°F |
| Destin | 86.0°F | 86.9°F |
| Fort Walton Beach | 86.0°F | 86.8°F |
| Santa Rosa Beach | 85.9°F | 86.8°F |
| Hilton Head Island | 85.0°F | 84.0°F |
Best time for vacation in Grand Isle
Grand Isle on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Grand Isle
Local time: 21:58
August 13, thursday
0000
86°F
NE
14 mph
14 mph
0300
86°F
NE
14 mph
14 mph
0600
84°F
NE
12 mph
12 mph
0900
86°F
NE
13 mph
13 mph
1200
88°F
NE
11 mph
11 mph
1500
90°F
NE
12 mph
12 mph
1800
86°F
NE
15 mph
15 mph
2100
86°F
NE
14 mph
14 mph
