Measurements:
°C
°F
CURRENT WEATHER
01:30
Grand Isle
78°F
N 9 mph
Feels like: 82°F
Precip: 0%
World Resorts USA Grand Isle Weather

7 Day Weather Forecast

05.19
sun
DAY
82°F
W 4 mph
precip
0%
NIGHT
82°F
N 11 mph
precip
68%
05.20
mon
DAY
84°F
NW 10 mph
precip
0%
NIGHT
82°F
NW 11 mph
precip
0%
05.21
tue
DAY
82°F
NW 14 mph
precip
0%
NIGHT
80°F
NW 14 mph
precip
0%
05.22
wed
DAY
82°F
NW 16 mph
precip
0%
NIGHT
80°F
NW 9 mph
precip
0%
05.23
thu
DAY
82°F
NW 14 mph
precip
0%
NIGHT
80°F
NW 9 mph
precip
0%
05.24
fri
DAY
82°F
N 12 mph
precip
0%
NIGHT
82°F
N 12 mph
precip
0%
05.25
sat
DAY
84°F
N 14 mph
precip
0%
NIGHT
82°F
N 13 mph
precip
0%

Grand Isle Sea Water Temperature in May, °F

Select Year: 2023 2022 2021

The average sea surface temperature in May 2023 for Grand Isle was 26.9°F. The maximum and minimum values were 22.9°F and 29.4°F respectively.

Grand Isle on the Weather Map

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
more details