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New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

Saturday
High: 80 °F
S 10kt
< 1ft
Saturday Night
Low: 61 °F
N 10kt
< 1ft

Small Craft Advisory
Sunday
High: 74 °F
NNE 20kt
< 1ft

Small Craft Advisory
Sunday Night
Low: 63 °F
NE 15kt
< 1ft

Small Craft Advisory
Monday
High: 76 °F
ENE 20kt
< 1ft

Small Craft Advisory
Monday Night
Low: 66 °F
E 10kt
< 1ft
Tuesday
High: 77 °F
E 15kt
< 1ft
Tuesday Night
Low: 65 °F
ESE 10kt
1ft
Wednesday
High: 76 °F
ESE 15kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:25 am CDT Apr 18, 2026
Forecast Valid: 2am CDT Apr 18, 2026-6pm CDT Apr 24, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY

Saturday

S wind 5 to 10 kt. Partly sunny. Seas 1 ft or less.

Saturday Night

S wind 5 to 10 kt becoming N after midnight. A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Seas 1 ft or less.

Sunday

NNE wind around 20 kt, with gusts as high as 30 kt. A chance of showers and thunderstorms before 1pm. 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 15 to 20 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

E wind 10 to 15 kt. Partly sunny. Seas 1 ft or less.

Tuesday Night

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

Wednesday

ESE wind 10 to 15 kt. A slight chance of showers. 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.