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3NM SW Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:02 am CDT Apr 2, 2026
Forecast Valid: 4am CDT Apr 2, 2026-6pm CDT Apr 8, 2026

Thursday

SE wind around 10 kt. A chance of showers and thunderstorms, mainly after 4pm. Patchy fog before 8am. Seas around 1 ft.

Thursday Night

SE wind around 10 kt. A chance of showers and thunderstorms before 7pm. Seas around 1 ft.

Friday

ESE wind around 10 kt. Partly sunny. Seas around 1 ft.

Friday Night

ESE wind around 10 kt. Partly cloudy. Seas around 1 ft.

Saturday

SE wind around 10 kt. A slight chance of showers, then a chance of showers and thunderstorms after 10am. Seas around 1 ft.

Saturday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Seas around 1 ft.

Sunday

S wind 5 to 10 kt becoming N in the morning. Showers likely and possibly a thunderstorm. Seas around 1 ft.

Sunday Night

NNE wind 10 to 20 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Monday

NE wind 15 to 20 kt. A chance of showers. 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.