World Resorts USA Grand Isle Weather

Grand Isle 14 Days Forecast

13.01
tue
Day
54°F
SW 7 mph
Precip.
0%
Night
59°F
E 7 mph
Precip.
0%
14.01
wed
Day
57°F
E 14 mph
Precip.
0%
Night
55°F
S 20 mph
Precip.
0%
15.01
thu
Day
48°F
S 20 mph
Precip.
0%
Night
46°F
SW 16 mph
Precip.
0%
16.01
fri
Day
54°F
NW 7 mph
Precip.
0%
Night
61°F
NE 4 mph
Precip.
0%
17.01
sat
Day
61°F
SE 11 mph
Precip.
0%
Night
54°F
S 16 mph
Precip.
0%
18.01
sun
Day
50°F
SW 14 mph
Precip.
0%
Night
55°F
N 9 mph
Precip.
0%
19.01
mon
Day
63°F
N 11 mph
Precip.
0%
Night
64°F
N 10 mph
Precip.
0%
20.01
tue
Day
66°F
NW 9 mph
Precip.
0%
Night
66°F
NW 12 mph
Precip.
0%
21.01
wed
Day
68°F
NW 16 mph
Precip.
57%
Night
68°F
NW 17 mph
Precip.
20%
22.01
thu
Day
70°F
N 11 mph
Precip.
29%
Night
70°F
N 11 mph
Precip.
0%
23.01
fri
Day
70°F
NW 12 mph
Precip.
0%
Night
70°F
NW 16 mph
Precip.
0%
24.01
sat
Day
70°F
NW 15 mph
Precip.
51%
Night
70°F
N 17 mph
Precip.
0%
25.01
sun
Day
72°F
N 14 mph
Precip.
0%
Night
70°F
NE 11 mph
Precip.
100%
26.01
mon
Day
68°F
S 12 mph
Precip.
20%
Night
66°F
NW 14 mph
Precip.
0%

Sea water temperature in January, °F

Show year:
2025
2024
2023

The average sea water temperature in January of 2025 was 61.0°F. The highest and lowest sea temperatures during the month were 67.6°F and 56.7°F.

Air temperature in Grand Isle, °F

Precipitation total in Grand Isle, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Grand Isle

Sunniest months:
October 18 days
September 15 days
November 14 days
Warmest months:
August 85.8 °F
July 85.4 °F
June 83.7 °F
Warmest sea temp:
August 88.0 °F
July 87.2 °F
June 85.0 °F
Coldest months:
January 58.6 °F
February 61.2 °F
December 62.4 °F
Rainiest months:
July 5 days
June 4 days
August 4 days
Windiest months:
January 13.2 mph
March 13.0 mph
April 13.0 mph

Grand Isle on a weather map

Grand Isle
+59°F
E 6 mph
Feels like: +59°F
Precip.: 0%
Places in USA:
Name
°F
+45°F
+72°F
+72°F
+63°F
+72°F
+73°F
+73°F
+68°F
+39°F
+70°F
+59°F
+68°F
+63°F
+52°F
+39°F
24 Hours Forecast
Grand Isle
Local time: 19:52
January 13, tuesday
2100
59°F
E
6 mph
January 14, wednesday
0000
59°F
E
7 mph
0300
59°F
E
9 mph
0600
57°F
SE
9 mph
0900
55°F
E
8 mph
1200
57°F
E
14 mph
1500
61°F
E
16 mph
1800
61°F
E
18 mph
Units of measurement: °C / °F