For More Weather Information:

Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 4:51 pm CDT Oct 18, 2026
Forecast Valid: 6pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH MONDAY EVENING...

Tonight

E wind 15 to 20 kt. Partly cloudy. Seas around 2 ft.

Monday

NE wind 15 to 20 kt. Mostly sunny. Seas around 2 ft.

Monday Night

ENE wind around 15 kt, with gusts as high as 20 kt. Partly cloudy. Seas around 2 ft.

Tuesday

ENE wind around 15 kt, with gusts as high as 20 kt. Sunny. Seas around 2 ft.

Tuesday Night

ENE wind around 10 kt. Mostly clear. Seas 1 to 2 ft.

Wednesday

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

Wednesday Night

ENE wind 5 to 10 kt. Clear. Seas around 1 ft.

Thursday

NNE wind 5 to 10 kt. Sunny. Seas around 1 ft.

Thursday Night

Variable winds 5 kt or less. Clear. Seas around 1 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.