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New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

Saturday
High: 88 °F
E 10kt
< 1ft
Saturday Night
Low: 81 °F
Light Wind
< 1ft
Sunday
High: 88 °F
Light Wind
< 1ft
Sunday Night
Low: 81 °F
Light Wind
< 1ft
Monday
High: 88 °F
Light Wind
< 1ft
Monday Night
Low: 81 °F
Light Wind
< 1ft
Tuesday
High: 88 °F
Light Wind
< 1ft
Tuesday Night
Low: 81 °F
Light Wind
< 1ft
Wednesday
High: 90 °F
SW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:01 am CDT Aug 8, 2026
Forecast Valid: 4am CDT Aug 8, 2026-6pm CDT Aug 14, 2026

View Nearby Observations

Detailed Forecast

Saturday

ENE wind 5 to 10 kt becoming ESE in the afternoon. A slight chance of showers and thunderstorms between 7am and 3pm. Some of the storms could produce heavy rainfall. 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 chance of showers and thunderstorms, mainly between 9am and 3pm. Some of the storms could produce heavy rainfall. Seas 1 ft or less.

Sunday Night

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

Monday

Variable winds 5 kt or less. A slight chance of showers and thunderstorms between 10am and 1pm. Seas 1 ft or less.

Monday Night

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

Tuesday

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

Tuesday Night

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

Wednesday

SW wind 5 to 10 kt. 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.