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New Orleans/Baton Rouge, LA Local Forecast Office

29NM NE Grand Isle LA

Marine Point Forecast

[NOTICE]

Thursday
High: 65 °F
E 20kt
3-4ft

Small Craft Advisory
Thursday Night
Low: 56 °F
E 15kt
2-3ft

Small Craft Advisory
Friday
High: 58 °F
N 10kt
1-2ft
Friday Night
Low: 56 °F
NE 10kt
1ft
Saturday
High: 63 °F
NE 10kt
1-2ft
Saturday Night
Low: 60 °F
E 10kt
1ft
Sunday
High: 65 °F
NNE 10kt
1ft
Sunday Night
Low: 53 °F
N 20kt
4ft
Monday
High: 56 °F
N 20kt
3-4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:24 pm CST Dec 3, 2025
Forecast Valid: 3am CST Dec 4, 2025-6pm CST Dec 10, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM CST THURSDAY THROUGH

Thursday

E wind 15 to 20 kt. Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. Seas 3 to 4 ft.

Thursday Night

E wind 10 to 15 kt becoming N after midnight. Winds could gust as high as 20 kt. Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 3am, then a chance of showers and thunderstorms after 3am. Seas 2 to 3 ft.

Friday

N wind around 10 kt. Showers likely and possibly a thunderstorm. Seas 1 to 2 ft.

Friday Night

NE wind 5 to 10 kt. Showers. Seas around 1 ft.

Saturday

NE wind around 10 kt. Showers and possibly a thunderstorm before 9am, then showers between 9am and noon, then showers and possibly a thunderstorm after noon. Seas 1 to 2 ft.

Saturday Night

E wind around 10 kt becoming N after midnight. Showers likely, mainly before midnight. Seas around 1 ft.

Sunday

NNE wind around 10 kt. A slight chance of showers before noon. Seas around 1 ft.

Sunday Night

N wind 10 to 20 kt. A slight chance of showers. Seas 1 ft building to 4 ft.

Monday

N wind 10 to 20 kt. Mostly sunny. Seas 3 to 4 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.