Current sea water temperature:
+63.9°F
| Minimum sea water temperature in February: | 71.2°F |
| Maximum sea water temperature in February: | 53.4°F |
| Average sea water temperature in February: | 62.4°F |
| more information | |
14 days
forecast
forecast
| Grand Isle |
monthly
weather
weather
| Grand Isle |
Sea water temperature for the last 10 days:
| February 26 | 63.9°F | February 21 | 66.2°F |
| February 25 | 63.5°F | February 20 | 64.2°F |
| February 24 | 63.9°F | February 19 | 62.4°F |
| February 23 | 66.6°F | February 18 | 64.0°F |
| February 22 | 66.4°F | February 17 | 64.4°F |
Monthly sea water temperature, °F
When is the warmest sea in Grand Isle?
Based on the data about daily sea water temperature for the last three years the warmest sea in Grand Isle was noticed in August, July and June.
Monthly Sea Temperatures in Grand Isle, °F
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.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 88.3°F. The highest and lowest sea temperatures during the month were 90.5°F and 86.2°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 86.2°F. The highest and lowest sea temperatures during the month were 89.1°F and 83.5°F.
current
weather
weather
| Grand Isle |
weather in
March
March
| Grand Isle |
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: 12:29
February 26, thursday
1500
64°F
NE
12 mph
12 mph
1800
64°F
NE
9 mph
9 mph
2100
64°F
NE
10 mph
10 mph
February 27, friday
0000
64°F
NE
9 mph
9 mph
0300
64°F
NE
7 mph
7 mph
0600
64°F
NE
7 mph
7 mph
0900
64°F
NE
11 mph
11 mph
1200
66°F
NE
8 mph
8 mph
