Average sea water temperature in July:
+87.2°F
| Minimum sea water temperature in July: | 91.2°F |
| Maximum sea water temperature in July: | 82.0°F |
Daily sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 87.6°F. The highest and lowest sea temperatures during the month were 89.6°F and 85.6°F.
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Monthly sea water temperature in Grand Isle, °F
Which USA resorts have warmest sea in July?
| Place name | July 2026 | July 2025 |
|---|---|---|
| Key West | 88.7°F | 86.7°F |
| Clearwater Beach | 88.4°F | 87.1°F |
| St. Petersburg | 88.2°F | 87.0°F |
| Tampa | 88.0°F | 86.8°F |
| Sarasota | 87.9°F | 86.9°F |
| Naples | 87.9°F | 86.6°F |
| Siesta Key | 87.9°F | 86.9°F |
| Miami | 87.5°F | 86.3°F |
| New Orleans | 87.3°F | 87.4°F |
| Miami Beach | 87.1°F | 86.0°F |
| Fort Lauderdale | 86.6°F | 85.0°F |
| Houston | 86.6°F | 86.3°F |
| Pensacola | 86.3°F | 86.9°F |
| Miramar Beach | 86.2°F | 86.2°F |
| West Palm Beach | 86.1°F | 84.6°F |
| Destin | 86.1°F | 86.3°F |
| Panama City Beach | 86.1°F | 86.3°F |
| Charleston (SC) | 85.7°F | 84.7°F |
| Isle of Palms | 85.4°F | 84.3°F |
| Corpus Christi | 85.4°F | 85.3°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: 19:17
July 23, thursday
2100
86°F
NW
11 mph
11 mph
July 24, friday
0000
86°F
NW
14 mph
14 mph
0300
86°F
N
11 mph
11 mph
0600
84°F
N
7 mph
7 mph
0900
84°F
NW
7 mph
7 mph
1200
84°F
NW
9 mph
9 mph
1500
84°F
NW
11 mph
11 mph
1800
84°F
N
10 mph
10 mph
