Measurements:
°C
°F
Grand Isle
76°F
NW 23 mph
Feels like: 80°F
Precip: 0%
World Resorts USA Grand Isle Weather

Grand Isle Sea Water Temperature

Current Sea Water Temperature:
+79.0°F
Maximum Sea Water Temperature in April: 81.4°F
Minimum Sea Water Temperature in April: 68.0°F
Average water temperature in April: 75.7°F

Sea Water Temperature for the Last 10 Days:

April 27 79.0°F April 22 78.0°F
April 26 76.0°F April 21 79.4°F
April 25 76.8°F April 20 77.8°F
April 24 75.4°F April 19 76.0°F
April 23 76.8°F April 18 75.8°F

When is the Warmest Sea for Grand Isle?

According to our data for the last three years for Grand Isle the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2023 2022 2021

The average sea surface temperature in August 2023 for Grand Isle was 94.4°F. The maximum and minimum values were 92.4°F and 96.2°F respectively.

Sea Water Temperature in July

Select Year: 2023 2022 2021

The average sea surface temperature in July 2023 for Grand Isle was 93.3°F. The maximum and minimum values were 91.0°F and 95.8°F respectively.

Sea Water Temperature in September

Select Year: 2023 2022 2021

The average sea surface temperature in September 2023 for Grand Isle was 90.5°F. The maximum and minimum values were 87.0°F and 93.2°F respectively.

Best Time to Visit Grand Isle
The most sunny months:
October 15 days
November 13 days
May 13 days
The most warm months:
August 89.5 °F
July 89.0 °F
June 87.3 °F
Warmest sea temperature:
August 91.9 °F
July 90.9 °F
September 88.5 °F
The most cold months:
January 60.7 °F
February 62.6 °F
December 64.7 °F
The most rainy months:
July 6 days
June 5 days
August 5 days
The most windy months:
April 12 mph
January 12 mph
March 12 mph

Grand Isle on the Weather Map

USA Resorts:
NAME
Boston +48
Chicago +64
Hawaii +82
Honolulu +78
Houston +78
Las Vegas +72
Los Angeles +66
Miami +78
New York +52
Orlando +74
San Diego +62
San Francisco +54
Sarasota +74
Tampa +74
Washington +56
24 Hours Weather Forecast
Grand Isle
Local time: 23:48
28 apr, sunday
0000 76°F
NW
23 mph
0300 76°F
NW
24 mph
0600 76°F
NW
25 mph
0900 78°F
NW
24 mph
1200 78°F
NW
19 mph
1500 78°F
NW
22 mph
1800 78°F
NW
22 mph
2100 78°F
NW
24 mph