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New Orleans/Baton Rouge, LA Local Forecast Office

11NM N Grand Isle LA

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 88 °F
Light Wind
< 1ft
Tonight
Low: 81 °F
Light Wind
< 1ft
Wednesday
High: 84 °F
⇑S 10kt
< 1ft
Wednesday Night
Low: 82 °F
Light Wind
< 1ft
Thursday
High: 87 °F
⇑SE 10kt
< 1ft
Thursday Night
Low: 81 °F
Light Wind
< 1ft
Friday
High: 87 °F
E 10kt
< 1ft
Friday Night
Low: 81 °F
Light Wind
< 1ft
Saturday
High: 87 °F
E 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:01 pm CDT Aug 4, 2026
Forecast Valid: 5pm CDT Aug 4, 2026-6pm CDT Aug 11, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Tonight

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

Wednesday

Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. A chance of showers and thunderstorms, mainly between 4pm and 5pm. Seas 1 ft or less.

Wednesday Night

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

Thursday

Variable winds less than 5 kt becoming SE 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

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

Friday

E wind 5 to 10 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Friday Night

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

Saturday

ENE wind 5 to 10 kt becoming ESE in the afternoon. A slight chance of showers and thunderstorms. 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.