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3NM SW Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 11:24 pm CST Jan 6, 2026
Forecast Valid: 12am CST Jan 7, 2026-6pm CST Jan 13, 2026

Overnight

Variable winds 5 kt or less. Patchy fog before 3am. Seas 1 ft or less.

Wednesday

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

Wednesday Night

SSW wind 5 to 10 kt becoming SSE after midnight. Patchy fog after 2am. Seas 1 ft or less.

Thursday

SSE wind around 10 kt. Patchy fog before 9am. Seas around 1 ft.

Thursday Night

SSE wind around 10 kt. A chance of showers, mainly between 9pm and midnight. Seas around 1 ft.

Friday

SSE wind 10 to 15 kt. Showers likely, mainly after 3pm. Seas around 1 ft.

Friday Night

S wind around 10 kt. Showers likely and possibly a thunderstorm. Seas around 1 ft.

Saturday

SW wind around 10 kt becoming N in the afternoon. Showers likely. Seas around 1 ft.

Saturday Night

N 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.