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New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

Thursday
High: 87 °F
SE 10kt
< 1ft
Thursday Night
Low: 79 °F
ESE 10kt
1ft
Friday
High: 86 °F
ESE 10kt
< 1ft
Friday Night
Low: 77 °F
SE 10kt
1ft
Saturday
High: 85 °F
SE 10kt
1ft
Saturday Night
Low: 77 °F
Light Wind
< 1ft
Sunday
High: 85 °F
Light Wind
< 1ft
Sunday Night
Low: 75 °F
Light Wind
< 1ft
Monday
High: 85 °F
NE 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:02 am CDT Oct 1, 2026
Forecast Valid: 3am CDT Oct 1, 2026-6pm CDT Oct 7, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 7 AM CDT THIS

Thursday

SE wind around 10 kt. A chance of showers, with thunderstorms also possible after 8am. Seas 1 ft or less.

Thursday Night

ESE wind around 10 kt. A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am, then a slight chance of showers and thunderstorms after 3am. Seas around 1 ft.

Friday

ESE wind around 10 kt. A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Friday Night

SE wind 5 to 10 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10pm. Seas around 1 ft.

Saturday

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

Saturday Night

Variable winds 5 kt or less. Showers and possibly a thunderstorm. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. Showers and possibly a thunderstorm. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Monday

NE wind around 10 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.

*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.