For More Weather Information:

Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:26 pm CST Nov 13, 2026
Forecast Valid: 1pm CST Nov 13, 2026-6pm CST Nov 19, 2026

This Afternoon

N wind around 10 kt. Sunny. Seas 1 ft or less.

Tonight

N wind 10 to 15 kt becoming NE after midnight. Mostly clear. Seas 1 ft or less.

Saturday

NE wind 10 to 15 kt. Sunny. Seas around 1 ft.

Saturday Night

E wind 10 to 15 kt. Mostly clear. Seas around 1 ft.

Sunday

E wind around 15 kt, with gusts as high as 20 kt. Mostly sunny. Seas around 1 ft.

Sunday Night

E wind 20 to 25 kt, with gusts as high as 30 kt. A chance of showers after midnight. Seas 1 to 2 ft.

Monday

ENE wind around 25 kt, with gusts as high as 35 kt. Showers likely. Seas 1 to 2 ft.

Monday Night

ENE wind around 30 kt, with gusts as high as 35 kt. A chance of showers and thunderstorms. Seas around 2 ft.

Tuesday

ENE wind 25 to 30 kt. A chance of showers. Seas around 2 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.