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New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

Sunday
High: 73 °F
NE 20kt
< 1ft

Small Craft Advisory
Sunday Night
Low: 62 °F
NE 15kt
< 1ft

Small Craft Advisory
Monday
High: 75 °F
ENE 15kt
< 1ft

Small Craft Advisory
Monday Night
Low: 65 °F
E 10kt
< 1ft
Tuesday
High: 79 °F
ESE 15kt
< 1ft
Tuesday Night
Low: 67 °F
ESE 10kt
1ft
Wednesday
High: 77 °F
SE 10kt
1ft
Wednesday Night
Low: 66 °F
SE 10kt
1ft
Thursday
High: 79 °F
ESE 15kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:02 am CDT Apr 19, 2026
Forecast Valid: 2am CDT Apr 19, 2026-6pm CDT Apr 25, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...

Sunday

NE wind around 20 kt, with gusts as high as 30 kt. A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and noon. Seas 1 ft or less.

Sunday Night

NE wind around 15 kt, with gusts as high as 25 kt. Partly cloudy. Seas 1 ft or less.

Monday

ENE wind around 15 kt, with gusts as high as 25 kt. Partly sunny. Seas 1 ft or less.

Monday Night

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

Tuesday

ESE wind 10 to 15 kt. Mostly sunny. Seas 1 ft or less.

Tuesday Night

ESE wind around 10 kt. Mostly cloudy. Seas around 1 ft.

Wednesday

SE wind around 10 kt. A slight chance of showers, with thunderstorms also possible after 1pm. Seas around 1 ft.

Wednesday Night

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

Thursday

ESE wind 10 to 15 kt. Sunny. Seas around 1 ft.

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.