Average sea water temperature in October:
+78.3°F
| Minimum sea water temperature in October: | 84.7°F |
| Maximum sea water temperature in October: | 69.6°F |
Daily sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 80.1°F. The highest and lowest sea temperatures during the month were 84.7°F and 76.5°F.
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| Grand Isle |
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| Grand Isle |
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| Grand Isle |
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| Grand Isle |
Monthly sea water temperature in Grand Isle, °F
Which USA resorts have warmest sea in October?
| Place name | October 2025 | October 2024 |
|---|---|---|
| Key West | 83.8°F | 82.9°F |
| West Palm Beach | 83.5°F | 83.3°F |
| Fort Lauderdale | 83.5°F | 83.0°F |
| Miami Beach | 83.4°F | 83.4°F |
| Miami | 82.7°F | 82.9°F |
| Naples | 81.9°F | 81.6°F |
| Kauai | 81.3°F | 79.2°F |
| Honolulu | 80.7°F | 80.6°F |
| Hawaii | 80.6°F | 80.5°F |
| Houston | 80.4°F | 78.8°F |
| Sarasota | 80.2°F | 80.5°F |
| Maui | 79.8°F | 79.4°F |
| Oahu | 79.8°F | 80.2°F |
| Tampa | 79.4°F | 79.3°F |
| Panama City Beach | 79.2°F | 78.9°F |
| Fort Walton Beach | 79.2°F | 78.6°F |
| Cocoa Beach | 79.2°F | 79.9°F |
| Pensacola Beach | 79.1°F | 78.1°F |
| Destin | 79.0°F | 78.5°F |
| Santa Rosa Beach | 78.9°F | 78.6°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: 09:49
September 02, wednesday
1200
86°F
NW
6 mph
6 mph
1500
86°F
NW
8 mph
8 mph
1800
86°F
NW
10 mph
10 mph
2100
84°F
N
4 mph
4 mph
September 03, thursday
0000
84°F
N
2 mph
2 mph
0300
84°F
N
1 mph
1 mph
0600
82°F
SW
4 mph
4 mph
0900
82°F
SW
3 mph
3 mph
