Measurements:
°C
°F
CURRENT WEATHER
22:10
Grand Isle
64°F
NW 9 mph
Feels like: 64°F
Precip: 0%
World Resorts USA Grand Isle Weather

7 Day Weather Forecast

12.12
fri
DAY
62°F
NW 4 mph
precip
0%
NIGHT
64°F
NW 8 mph
precip
0%
12.13
sat
DAY
66°F
NW 7 mph
precip
0%
NIGHT
60°F
NW 4 mph
precip
0%
12.14
sun
DAY
60°F
S 27 mph
precip
0%
NIGHT
48°F
SW 24 mph
precip
0%
12.15
mon
DAY
46°F
SW 14 mph
precip
0%
NIGHT
52°F
W 10 mph
precip
0%
12.16
tue
DAY
60°F
W 9 mph
precip
0%
NIGHT
62°F
W 9 mph
precip
0%
12.17
wed
DAY
64°F
W 10 mph
precip
0%
NIGHT
66°F
NW 12 mph
precip
0%
12.18
thu
DAY
66°F
W 11 mph
precip
0%
NIGHT
66°F
W 11 mph
precip
0%

Grand Isle Sea Water Temperature in December, °F

Select Year: 2024 2023 2022

The average sea surface temperature in December 2024 for Grand Isle was 18.8°F. The maximum and minimum values were 17.5°F and 21.0°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 59.5 °F
February 62.4 °F
December 64.4 °F
The most rainy months:
July 5 days
June 4 days
August 4 days
The most windy months:
January 13 mph
March 12 mph
April 12 mph
more details