For More Weather Information:

11NM N Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:36 am CDT Mar 12, 2026
Forecast Valid: 6am CDT Mar 12, 2026-6pm CDT Mar 18, 2026

Today

NW wind 20 to 25 kt becoming N in the morning. Mostly cloudy through mid morning, then gradual clearing. Seas around 1 ft.

Tonight

NE wind 15 to 20 kt decreasing to 5 to 10 kt after midnight. Mostly clear. Seas 1 ft or less.

Friday

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Saturday

Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Sunday

SSW wind 5 to 10 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

SSW wind 10 to 15 kt becoming NW after midnight. A chance of showers and thunderstorms after 1am. Seas 1 ft or less.

Monday

N wind 15 to 20 kt, with gusts as high as 25 kt. A slight chance of showers and thunderstorms before 1pm. 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.