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

Hazardous Weather Conditions

11NM N Grand Isle LA

Marine Point Forecast

[NOTICE]

    • Thursday

      Thursday:S wind 10 to 15 kt. Areas of dense fog before 8am. Seas 1 ft or less.

      High: 69 °F

      S 15kt
      < 1ft

    • Thursday Night

      Thursday Night:S wind 5 to 15 kt. Patchy dense fog after 1am. Seas 1 ft or less.

      Low: 65 °F

      S 15kt
      < 1ft

    • Friday

      Friday:S wind 5 to 10 kt. A chance of showers, mainly after noon. Patchy fog before 7am. Seas 1 ft or less.

      High: 70 °F

      S 10kt
      < 1ft

    • Friday Night

      Friday Night:S wind 5 to 10 kt. A slight chance of showers. Seas 1 ft or less.

      Low: 65 °F

      S 10kt
      < 1ft

    • Saturday

      Saturday:SSW wind 5 to 10 kt. A chance of showers after noon. Seas 1 ft or less.

      High: 71 °F

      SSW 10kt
      < 1ft

    • Saturday Night

      Saturday Night:SW wind 5 to 10 kt becoming N 15 to 25 kt after midnight. Winds could gust as high as 30 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

      Low: 51 °F

      ⇑N 25kt
      < 1ft

    • Sunday

      Sunday:N wind 20 to 25 kt. Sunny. Seas around 1 ft.

      High: 59 °F

      N 25kt
      1ft

    • Sunday Night

      Sunday Night:N wind around 20 kt, with gusts as high as 25 kt. Partly cloudy. Seas around 1 ft.

      Low: 44 °F

      N 20kt
      1ft

    • Monday

      Monday:N wind 15 to 20 kt. Sunny. Seas around 1 ft.

      High: 55 °F

      N 20kt
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:32 pm CST Feb 18, 2026
Forecast Valid: 3am CST Feb 19, 2026-6pm CST Feb 25, 2026

View Nearby Observations

Detailed Forecast


Thursday
S wind 10 to 15 kt. Areas of dense fog before 8am. Seas 1 ft or less.
Thursday Night
S wind 5 to 15 kt. Patchy dense fog after 1am. Seas 1 ft or less.
Friday
S wind 5 to 10 kt. A chance of showers, mainly after noon. Patchy fog before 7am. Seas 1 ft or less.
Friday Night
S wind 5 to 10 kt. A slight chance of showers. Seas 1 ft or less.
Saturday
SSW wind 5 to 10 kt. A chance of showers after noon. Seas 1 ft or less.
Saturday Night
SW wind 5 to 10 kt becoming N 15 to 25 kt after midnight. Winds could gust as high as 30 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Sunday
N wind 20 to 25 kt. Sunny. Seas around 1 ft.
Sunday Night
N wind around 20 kt, with gusts as high as 25 kt. Partly cloudy. Seas around 1 ft.
Monday
N wind 15 to 20 kt. Sunny. Seas around 1 ft.

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: 11:32 pm CST Feb 18, 2026
Forecast Valid: 3am CST Feb 19, 2026-6pm CST Feb 25, 2026
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