For More Weather Information:

17NM E Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 5:42 am CDT Mar 14, 2026
Forecast Valid: 7am CDT Mar 14, 2026-6pm CDT Mar 20, 2026

Today

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

Tonight

ESE wind 5 to 10 kt becoming SSE after midnight. Partly cloudy. Seas 1 ft or less.

Sunday

S wind around 10 kt. A slight chance of showers after 4pm. Seas 1 ft or less.

Sunday Night

S wind 10 to 15 kt becoming WNW 15 to 20 kt after midnight. Showers and possibly a thunderstorm. Seas around 1 ft.

Monday

NNW wind 20 to 25 kt, with gusts as high as 30 kt. Showers likely, mainly before 7am. Seas around 1 ft.

Monday Night

N wind around 20 kt. Mostly cloudy. Seas around 1 ft.

Tuesday

N wind 10 to 15 kt. Partly sunny. Seas 1 ft or less.

Tuesday Night

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

Wednesday

E wind 5 to 10 kt. Sunny. 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.