Measurements:
°C
°F
CURRENT WEATHER
06:23
Grand Isle
74°F
NW 15 mph
Feels like: 80°F
Precip: 0%
World Resorts USA Grand Isle Weather

7 Day Weather Forecast

04.03
fri
DAY
76°F
NW 16 mph
precip
0%
NIGHT
74°F
NW 17 mph
precip
0%
04.04
sat
DAY
74°F
NW 16 mph
precip
0%
NIGHT
74°F
NW 12 mph
precip
0%
04.05
sun
DAY
74°F
NW 6 mph
precip
0%
NIGHT
70°F
SW 21 mph
precip
100%
04.06
mon
DAY
60°F
SW 27 mph
precip
100%
NIGHT
64°F
SW 20 mph
precip
0%
04.07
tue
DAY
68°F
SW 29 mph
precip
0%
NIGHT
68°F
SW 22 mph
precip
0%
04.08
wed
DAY
64°F
SW 19 mph
precip
0%
NIGHT
68°F
W 18 mph
precip
0%
04.09
thu
DAY
68°F
W 19 mph
precip
0%
NIGHT
68°F
W 17 mph
precip
0%

Grand Isle Sea Water Temperature in April, °F

Select Year: 2025 2024 2023

The average sea surface temperature in April 2025 for Grand Isle was 24.0°F. The maximum and minimum values were 22.0°F and 26.7°F respectively.

Grand Isle on the Weather Map

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 12 mph
March 12 mph
more details