Measurements:
°C
°F
CURRENT WEATHER
14:58
Grand Isle
68°F
NW 18 mph
Feels like: 68°F
Precip: 100%
World Resorts USA Grand Isle Weather

7 Day Weather Forecast

01.09
fri
DAY
68°F
NW 17 mph
precip
0%
NIGHT
70°F
N 16 mph
precip
100%
01.10
sat
DAY
70°F
NE 11 mph
precip
0%
NIGHT
58°F
S 20 mph
precip
0%
01.11
sun
DAY
56°F
S 21 mph
precip
0%
NIGHT
54°F
S 23 mph
precip
0%
01.12
mon
DAY
50°F
SW 14 mph
precip
0%
NIGHT
52°F
SW 9 mph
precip
0%
01.13
tue
DAY
52°F
NE 4 mph
precip
0%
NIGHT
56°F
E 9 mph
precip
0%
01.14
wed
DAY
62°F
E 11 mph
precip
0%
NIGHT
64°F
E 21 mph
precip
0%
01.15
thu
DAY
54°F
S 22 mph
precip
0%
NIGHT
50°F
S 14 mph
precip
0%

Grand Isle Sea Water Temperature in January, °F

Select Year: 2025 2024 2023

The average sea surface temperature in January 2025 for Grand Isle was 16.1°F. The maximum and minimum values were 13.7°F and 19.8°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 63.8 °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