For More Weather Information:

New Orleans/Baton Rouge, LA Local Forecast Office

11NM N Grand Isle LA

Marine Point Forecast

[NOTICE]

Tonight
Low: 61 °F
Light Wind
< 1ft
Friday
High: 70 °F
SSW 10kt
< 1ft
Friday Night
Low: 64 °F
Light Wind
< 1ft
Saturday
High: 70 °F
Light Wind
< 1ft
Saturday Night
Low: 64 °F
Light Wind
< 1ft
Sunday
High: 70 °F
S 10kt
< 1ft
Sunday Night
Low: 62 °F
SSW 10kt
< 1ft
Monday
High: 68 °F
N 20kt
1ft
Monday Night
Low: 38 °F
N 20kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:56 pm CST Dec 25, 2025
Forecast Valid: 10pm CST Dec 25, 2025-6pm CST Jan 1, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Widespread dense fog, mainly between 11pm and 4am. Seas 1 ft or less.

Friday

SSW wind 5 to 10 kt. Patchy dense fog before 9am. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. Widespread dense fog, mainly after 10pm. Seas 1 ft or less.

Saturday

Variable winds 5 kt or less. Widespread dense fog before 7am. Seas 1 ft or less.

Saturday Night

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

Sunday

S wind 5 to 10 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

S wind 5 to 10 kt becoming WSW after midnight. A chance of showers after midnight. Seas 1 ft or less.

Monday

WSW wind 10 to 20 kt becoming N in the afternoon. A chance of showers and thunderstorms before noon, then a slight chance of showers. Seas around 1 ft.

Monday Night

N wind around 20 kt, with gusts as high as 25 kt. Partly cloudy. Seas around 1 ft.

*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.