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New Orleans/Baton Rouge, LA Local Forecast Office

29NM NE Grand Isle LA

Marine Point Forecast

[NOTICE]

This Afternoon
High: 56 °F
ENE 10kt
1ft
Tonight
Low: 56 °F
E 10kt
1-2ft
Thursday
High: 62 °F
E 20kt
3-5ft

Small Craft Advisory
Thursday Night
Low: 58 °F
E 20kt
4ft

Small Craft Advisory
Friday
High: 62 °F
NNW 15kt
2-3ft
Friday Night
Low: 57 °F
NNE 10kt
1ft
Saturday
High: 63 °F
NE 10kt
2ft
Saturday Night
Low: 60 °F
ENE 10kt
1-2ft
Sunday
High: 65 °F
NNE 10kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:32 am CST Dec 3, 2025
Forecast Valid: 3pm CST Dec 3, 2025-6pm CST Dec 10, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH LATE

This Afternoon

ENE wind around 10 kt. Partly sunny. Seas around 1 ft.

Tonight

E wind around 10 kt. Showers likely, mainly after 4am. Seas 1 to 2 ft.

Thursday

E wind 15 to 20 kt. Showers, with thunderstorms also possible after noon. Seas 3 to 5 ft.

Thursday Night

E wind 10 to 20 kt becoming W after midnight. Showers and possibly a thunderstorm. Seas 4 ft subsiding to 1 ft.

Friday

NNW wind 10 to 15 kt. Showers and possibly a thunderstorm before 9am, then showers between 9am and 3pm, then showers and possibly a thunderstorm after 3pm. Seas 2 to 3 ft.

Friday Night

NNE wind 5 to 10 kt. Showers likely. Seas around 1 ft.

Saturday

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

Saturday Night

ENE wind around 10 kt. Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Seas 1 to 2 ft.

Sunday

NNE wind around 10 kt. A slight chance of showers. Seas 1 to 2 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.