Measurements:
°C
°F
CURRENT WEATHER
12:15
Grand Isle
84°F
W 27 mph
Feels like: 90°F
Precip: 73%
World Resorts USA Grand Isle Weather

7 Day Weather Forecast

06.04
thu
DAY
84°F
W 27 mph
precip
73%
NIGHT
82°F
W 24 mph
precip
8%
06.05
fri
DAY
84°F
NW 19 mph
precip
73%
NIGHT
84°F
N 21 mph
precip
16%
06.06
sat
DAY
84°F
N 13 mph
precip
74%
NIGHT
84°F
N 13 mph
precip
7%
06.07
sun
DAY
86°F
NW 12 mph
precip
13%
NIGHT
84°F
NW 13 mph
precip
2%
06.08
mon
DAY
84°F
NW 12 mph
precip
18%
NIGHT
86°F
NW 11 mph
precip
1%
06.09
tue
DAY
86°F
NW 11 mph
precip
5%
NIGHT
86°F
W 11 mph
precip
1%
06.10
wed
DAY
86°F
NW 10 mph
precip
1%
NIGHT
86°F
W 9 mph
precip
2%

Grand Isle Sea Water Temperature in June, °F

Select Year: 2025 2024 2023

The average sea surface temperature in June 2025 for Grand Isle was 30.1°F. The maximum and minimum values were 28.6°F and 31.7°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 13 mph
March 12 mph
more details