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New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

Overnight
Low: 82 °F
WSW 10kt
< 1ft
Thursday
High: 92 °F
WNW 10kt
< 1ft
Thursday Night
Low: 82 °F
SW 10kt
< 1ft
Friday
High: 92 °F
WNW 10kt
< 1ft
Friday Night
Low: 81 °F
W 10kt
< 1ft
Saturday
High: 92 °F
WNW 10kt
< 1ft
Saturday Night
Low: 81 °F
Light Wind
< 1ft
Sunday
High: 92 °F
Light Wind
< 1ft
Sunday Night
Low: 82 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:56 pm CDT Aug 19, 2026
Forecast Valid: 11pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026

View Nearby Observations

Detailed Forecast

Overnight

WSW wind around 10 kt. Partly cloudy. Seas 1 ft or less.

Thursday

WNW wind 5 to 10 kt becoming SW in the afternoon. Sunny. Seas 1 ft or less.

Thursday Night

SW wind 5 to 10 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.

Friday

WNW wind 5 to 10 kt becoming WSW in the afternoon. A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Friday Night

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

Saturday

WNW wind 5 to 10 kt becoming SW in the afternoon. A chance of showers and thunderstorms, mainly before 1pm. Seas 1 ft or less.

Saturday Night

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

Sunday

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

Sunday Night

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