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New Orleans/Baton Rouge, LA Local Forecast Office

29NM NE Grand Isle LA

Marine Point Forecast

[NOTICE]

Tonight
Low: 54 °F
Light Wind
1ft
Saturday
High: 58 °F
NE 10kt
1-2ft
Saturday Night
Low: 59 °F
E 10kt
< 1ft
Sunday
High: 65 °F
Light Wind
< 1ft
Sunday Night
Low: 52 °F
⇑N 25kt
5ft
Monday
High: 56 °F
N 25kt
3-5ft
Monday Night
Low: 50 °F
NNE 15kt
2-3ft
Tuesday
High: 56 °F
NE 10kt
1-2ft
Tuesday Night
Low: 52 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:39 pm CST Dec 5, 2025
Forecast Valid: 8pm CST Dec 5, 2025-6pm CST Dec 12, 2025

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Seas around 1 ft.

Saturday

N wind around 10 kt becoming E in the afternoon. Showers, mainly before 2pm. Seas 1 to 2 ft.

Saturday Night

E wind 5 to 10 kt. A chance of showers, with thunderstorms also possible after midnight. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. A chance of showers and thunderstorms before 9am, then a chance of showers between 9am and noon, then a slight chance of showers and thunderstorms after noon. Seas 1 ft or less.

Sunday Night

NE wind 5 to 10 kt becoming N 15 to 25 kt in the evening. A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Seas 1 ft building to 5 ft.

Monday

N wind 15 to 25 kt. Mostly sunny. Seas 3 to 5 ft.

Monday Night

NNE wind 10 to 15 kt. Partly cloudy. Seas 2 to 3 ft.

Tuesday

NE wind 5 to 10 kt. Sunny. Seas 1 to 2 ft.

Tuesday Night

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

Winds and waves 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.