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New Orleans/Baton Rouge, LA Local Forecast Office

11NM N Grand Isle LA

Marine Point Forecast

[NOTICE]

Today
High: 81 °F
NE 15kt
< 1ft
Tonight
Low: 79 °F
NE 15kt
< 1ft
Wednesday
High: 81 °F
NE 20kt
1ft

Small Craft Advisory
Wednesday Night
Low: 76 °F
ENE 20kt
1ft

Small Craft Advisory
Thursday
High: 81 °F
ENE 25kt
1ft

Small Craft Advisory
Thursday Night
Low: 75 °F
ENE 20kt
1ft

Small Craft Advisory
Friday
High: 81 °F
ENE 30kt
1ft
Friday Night
Low: 74 °F
ENE 30kt
1ft
Saturday
High: 80 °F
SE 30kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:57 am CDT Oct 6, 2026
Forecast Valid: 9am CDT Oct 6, 2026-6pm CDT Oct 12, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH WEDNESDAY

Today

NE wind 10 to 15 kt. A slight chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 1pm. Seas 1 ft or less.

Tonight

NE wind around 15 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday

NE wind around 20 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms, mainly between 2pm and 3pm. Seas around 1 ft.

Wednesday Night

ENE wind 15 to 20 kt. A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Seas around 1 ft.

Thursday

ENE wind 20 to 25 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Seas around 1 ft.

Thursday Night

ENE wind around 20 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Friday

ENE wind 25 to 30 kt, with gusts as high as 35 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Seas around 1 ft.

Friday Night

ENE wind around 30 kt, with gusts as high as 35 kt. Showers likely and possibly a thunderstorm. Seas around 1 ft.

Saturday

SE wind around 30 kt, with gusts as high as 45 kt. Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. 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.