For More Weather Information:

New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

Tonight
Low: 62 °F
SSW 10kt
1ft
Thursday
High: 72 °F
SSW 10kt
1ft
Thursday Night
Low: 62 °F
SSW 10kt
1ft
Friday
High: 72 °F
NNW 10kt
1ft
Friday Night
Low: 59 °F
Light Wind
< 1ft
Saturday
High: 72 °F
Light Wind
< 1ft
Saturday Night
Low: 59 °F
Light Wind
< 1ft
Sunday
High: 73 °F
E 10kt
< 1ft
Sunday Night
Low: 62 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:03 pm CST Feb 25, 2026
Forecast Valid: 9pm CST Feb 25, 2026-6pm CST Mar 4, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind around 10 kt. Partly cloudy. Seas around 1 ft.

Thursday

SSW wind around 10 kt. Mostly sunny. Seas around 1 ft.

Thursday Night

SSW wind 5 to 10 kt becoming WSW after midnight. A chance of showers. Patchy fog between 8pm and 10pm. Seas around 1 ft.

Friday

WSW wind 5 to 10 kt becoming NNE in the afternoon. Showers likely before 9am, then showers likely and possibly a thunderstorm between 9am and noon, then a chance of showers and thunderstorms after noon. Seas around 1 ft.

Friday Night

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

Saturday

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

Saturday Night

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

Sunday

E wind 5 to 10 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Mostly clear. 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.