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17NM E Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 11:32 am CST Jan 21, 2026
Forecast Valid: 5pm CST Jan 21, 2026-6pm CST Jan 28, 2026

Tonight

Variable winds 5 kt or less. A chance of showers, mainly after 8pm. Seas 1 ft or less.

Thursday

Variable winds 5 kt or less. A slight chance of showers before 7am. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. A slight chance of showers after midnight. Seas 1 ft or less.

Friday

E wind 5 to 10 kt. A chance of showers, mainly after 9am. Seas 1 ft or less.

Friday Night

E wind around 10 kt. A chance of showers. Seas 1 ft or less.

Saturday

E wind around 10 kt becoming SE in the afternoon. A chance of showers. Seas around 1 ft.

Saturday Night

SE wind around 10 kt becoming NW after midnight. Showers likely. Seas around 1 ft.

Sunday

NNW wind 10 to 15 kt. Showers. Seas around 1 ft.

Sunday Night

N wind around 15 kt. A chance of showers. Seas 1 ft or less.

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.