Measurements:
°C
°F
Grand Isle
80°F
SW 3 mph
Feels like: 82°F
Precip: 0%
World Resorts USA Grand Isle Weather April Weather in Grand Isle

Grand Isle Weather: April

Average Day Temperature: 75.1°F
Average Night Temperature: 72.0°F
Sea Water Temperature: 76.2°F
Number of Sunny Days: 12 days
Sunshine Hours: 12.5 - 13.3 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.1 in

Air Temperature in April, °F

Select Year: 2026 2025 2024

The highest day temperature in April 2026 was 80°F. The lowest night temperature was 68°F. The average values for day and night temperatures during April were 75.1°F и 74.5°F respectivly.

Grand Isle Water Sea Temperature in April, °F

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Grand Isle was 77.2°F. The maximum and minimum values were 74.2°F and 81.4°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during April. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in April, in

Precipitation total in April for Grand Isle is 1.1 in.

Wind Speed in April, mph

The average wind speed in April is 13.2 mph. It makes April one of the most windy months of the year for Grand Isle.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Grand Isle in April is 7.8 hours.

Best Time to Visit Grand Isle
The most sunny months:
October 18 days
September 15 days
November 14 days
The most warm months:
August 89.8 °F
July 89.3 °F
June 87.5 °F
Warmest sea temperature:
August 92.2 °F
July 91.3 °F
June 88.9 °F
The most cold months:
January 59.3 °F
February 62.0 °F
December 63.8 °F
The most rainy months:
July 5 days
June 4 days
August 4 days
The most windy months:
January 13 mph
April 13 mph
March 12 mph

Grand Isle on the Weather Map

USA Resorts:
NAME
Boston +62
Chicago +56
Hawaii +76
Honolulu +76
Houston +94
Las Vegas +88
Los Angeles +66
Maui +70
Miami +94
Miami Beach +90
New York +68
San Diego +66
San Francisco +62
Sarasota +94
Tampa +94
24 Hours Weather Forecast
Grand Isle
Local time: 12:06
14 may, thursday
1500 80°F
N
8 mph
1800 80°F
NE
11 mph
2100 80°F
NE
9 mph
15 may, friday
0000 80°F
NE
7 mph
0300 78°F
N
7 mph
0600 78°F
N
6 mph
0900 78°F
NW
8 mph
1200 78°F
NW
11 mph