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New Orleans/Baton Rouge, LA Local Forecast Office

3NM SW Grand Isle LA

Marine Point Forecast

[NOTICE]

Labor Day
High: 86 °F
ENE 10kt
1ft
Tonight
Low: 83 °F
E 10kt
1ft
Tuesday
High: 83 °F
E 10kt
1ft
Tuesday Night
Low: 80 °F
E 10kt
1ft
Wednesday
High: 86 °F
ENE 10kt
< 1ft
Wednesday Night
Low: 80 °F
Light Wind
< 1ft
Thursday
High: 88 °F
Light Wind
< 1ft
Thursday Night
Low: 82 °F
Light Wind
< 1ft
Friday
High: 88 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:16 am CDT Sep 1, 2025
Forecast Valid: 9am CDT Sep 1, 2025-6pm CDT Sep 7, 2025

View Nearby Observations

Detailed Forecast

Labor Day

ENE wind around 10 kt. A chance of showers and thunderstorms, mainly after noon. Seas around 1 ft.

Tonight

E wind around 10 kt. A chance of showers and thunderstorms, mainly after 1am. Seas around 1 ft.

Tuesday

E wind around 10 kt. Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Seas around 1 ft.

Tuesday Night

E wind 5 to 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Wednesday

ENE wind 5 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1am. Seas 1 ft or less.

Thursday

Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 1pm. Seas 1 ft or less.

Thursday Night

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

Friday

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Winds and seas 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.