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:
2026
2025
2024
The average sea water temperature in August of 2026 was 87.7°F. The highest and lowest sea temperatures during the month were 90.7°F and 84.4°F.
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Monthly sea water temperature in Grand Isle, °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 |
| Galveston | 87.3°F | 87.9°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 |
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: 07:55
October 14, wednesday
0900
79°F
W
7 mph
7 mph
1200
79°F
W
6 mph
6 mph
1500
79°F
NW
8 mph
8 mph
1800
79°F
NW
7 mph
7 mph
2100
79°F
W
13 mph
13 mph
October 15, thursday
0000
79°F
NW
13 mph
13 mph
0300
79°F
NW
11 mph
11 mph
0600
79°F
W
11 mph
11 mph
