Average sea water temperature in May:
+79.9°F
| Minimum sea water temperature in May: | 85.6°F |
| Maximum sea water temperature in May: | 73.2°F |
Daily sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 81.1°F. The highest and lowest sea temperatures during the month were 85.6°F and 76.5°F.
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| Grand Isle |
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Monthly sea water temperature in Grand Isle, °F
Which USA resorts have warmest sea in May?
| Place name | May 2025 | May 2024 |
|---|---|---|
| Everglades | 84.5°F | 84.6°F |
| Islamorada | 83.6°F | 84.4°F |
| Key West | 83.5°F | 84.6°F |
| Naples | 83.5°F | 83.8°F |
| Marco Island | 83.5°F | 84.0°F |
| Key Largo | 83.5°F | 84.1°F |
| Sanibel Island | 83.1°F | 83.2°F |
| Sarasota | 82.7°F | 82.9°F |
| Tampa | 82.7°F | 82.5°F |
| St. Petersburg | 82.6°F | 82.4°F |
| Clearwater Beach | 82.6°F | 82.5°F |
| Miami | 82.6°F | 83.3°F |
| Siesta Key | 82.5°F | 82.6°F |
| Miami Beach | 82.4°F | 83.0°F |
| Fort Lauderdale | 81.1°F | 81.7°F |
| West Palm Beach | 81.1°F | 81.5°F |
| Corpus Christi | 80.9°F | 81.0°F |
| Pensacola | 80.1°F | 79.4°F |
| South Padre Island | 80.0°F | 81.1°F |
| Pass Christian | 79.8°F | 79.8°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: 12:56
December 28, sunday
1500
68°F
N
11 mph
11 mph
1800
68°F
N
12 mph
12 mph
2100
68°F
NE
11 mph
11 mph
December 29, monday
0000
68°F
NE
9 mph
9 mph
0300
66°F
NE
8 mph
8 mph
0600
66°F
E
8 mph
8 mph
0900
59°F
S
30 mph
30 mph
1200
55°F
S
26 mph
26 mph
