National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

11NM N Grand Isle LA

Marine Point Forecast

[NOTICE]

    • Today

      Today:Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

      High: 85 °F

      Light Wind
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Low: 77 °F

      Light Wind
      < 1ft

    • Monday

      Monday:Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

      High: 85 °F

      Light Wind
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Low: 78 °F

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:ESE wind 5 to 10 kt. Sunny. Seas 1 ft or less.

      High: 84 °F

      ESE 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:ESE wind 10 to 15 kt. Mostly clear. Seas 1 ft or less.

      Low: 79 °F

      ESE 15kt
      < 1ft

    • Wednesday

      Wednesday:SE wind 10 to 15 kt, with gusts as high as 20 kt. A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Seas 1 ft or less.

      High: 85 °F

      SE 15kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SE wind 15 to 20 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.

      Low: 80 °F

      SE 20kt
      < 1ft

    • Thursday

      Thursday:SE wind around 15 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

      High: 85 °F

      SE 15kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:57 am CDT Sep 27, 2026
Forecast Valid: 8am CDT Sep 27, 2026-6pm CDT Oct 3, 2026

View Nearby Observations

Detailed Forecast


Today
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Tonight
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Monday
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
Monday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Tuesday
ESE wind 5 to 10 kt. Sunny. Seas 1 ft or less.
Tuesday Night
ESE wind 10 to 15 kt. Mostly clear. Seas 1 ft or less.
Wednesday
SE wind 10 to 15 kt, with gusts as high as 20 kt. A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Seas 1 ft or less.
Wednesday Night
SE wind 15 to 20 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Thursday
SE wind around 15 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Winds and seas higher in and near thunderstorms.

*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 29.44°N 89.98°W
Last Update: 1:57 am CDT Sep 27, 2026
Forecast Valid: 8am CDT Sep 27, 2026-6pm CDT Oct 3, 2026
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