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New Orleans/Baton Rouge, LA Local Forecast Office

3NM SW Grand Isle LA

Marine Point Forecast

[NOTICE]

Today
High: 74 °F
N 10kt
1ft
Tonight
Low: 62 °F
NNE 20kt
1ft
Monday
High: 68 °F
NE 20kt
1ft
Monday Night
Low: 63 °F
NE 15kt
1ft
Tuesday
High: 72 °F
ENE 20kt
1ft
Tuesday Night
Low: 66 °F
E 15kt
1ft
Wednesday
High: 72 °F
E 20kt
1-2ft
Wednesday Night
Low: 67 °F
E 20kt
1-2ft
Thursday
High: 74 °F
E 20kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:02 am CDT Apr 5, 2026
Forecast Valid: 10am CDT Apr 5, 2026-6pm CDT Apr 11, 2026

View Nearby Observations

Detailed Forecast

Today

N wind 5 to 10 kt. Showers and possibly a thunderstorm. Seas around 1 ft.

Tonight

NNE wind 15 to 20 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Monday

NE wind 15 to 20 kt. A chance of showers, mainly before 1pm. Seas around 1 ft.

Monday Night

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

Tuesday

ENE wind 15 to 20 kt. Partly sunny. Seas around 1 ft.

Tuesday Night

E wind around 15 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms after 1am. Seas around 1 ft.

Wednesday

E wind around 20 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Seas 1 to 2 ft.

Wednesday Night

E wind around 20 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Seas 1 to 2 ft.

Thursday

E wind 15 to 20 kt. A chance of showers and thunderstorms. 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.