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3NM SW Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 10:02 am CST Dec 2, 2025
Forecast Valid: 11am CST Dec 2, 2025-6pm CST Dec 8, 2025

Today

NNW wind 10 to 15 kt. Mostly sunny. Seas around 1 ft.

Tonight

N wind 10 to 15 kt becoming NE after midnight. Partly cloudy. Seas around 1 ft.

Wednesday

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

Wednesday Night

E wind 5 to 10 kt. A chance of showers, mainly after midnight. Seas around 1 ft.

Thursday

E wind 10 to 15 kt. Showers before 9am, then showers and possibly a thunderstorm between 9am and noon, then showers after noon. Seas around 1 ft.

Thursday Night

E wind 10 to 15 kt. Showers likely, with thunderstorms also possible after midnight. Seas around 1 ft.

Friday

ENE wind around 10 kt becoming N in the morning. Showers and possibly a thunderstorm. Seas around 1 ft.

Friday Night

NNE wind 5 to 10 kt. Showers likely. Seas around 1 ft.

Saturday

NNE wind 5 to 10 kt. A chance of showers. 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.