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3NM SW Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 11:57 pm CST Nov 17, 2025
Forecast Valid: 1am CST Nov 18, 2025-6pm CST Nov 24, 2025

Tuesday

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

Tuesday Night

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

Wednesday

Variable winds 5 kt or less. Patchy fog between 7am and 8am. Seas 1 ft or less.

Wednesday Night

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

Thursday

ESE wind 5 to 10 kt. Mostly sunny. Seas around 1 ft.

Thursday Night

ESE wind around 10 kt becoming S after midnight. A chance of showers, mainly after midnight. Seas around 1 ft.

Friday

SSW wind around 10 kt. A chance of showers. Seas around 1 ft.

Friday Night

S wind 5 to 10 kt becoming WSW after midnight. A slight chance of showers. Seas around 1 ft.

Saturday

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

Winds and seas higher in and near thunderstorms.

*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.