3NM SW Grand Isle LA

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:E wind around 10 kt. Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. Some of the storms could produce heavy rainfall.   Seas around 1 ft.

      High: 69 °F

      E 10kt
      1ft

    • Thursday Night

      Thursday Night:E wind around 10 kt becoming NNW after midnight. Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then a chance of showers and thunderstorms after 2am.   Seas around 1 ft.

      Low: 59 °F

      E 10kt
      1ft

    • Friday

      Friday:N wind around 10 kt. Showers and possibly a thunderstorm.   Seas around 1 ft.

      High: 62 °F

      N 10kt
      1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Showers likely.   Seas 1 ft or less.

      Low: 58 °F

      Light Wind
      < 1ft

    • Saturday

      Saturday:NE wind 5 to 10 kt. Showers, with thunderstorms also possible after 9am.   Seas 1 ft or less.

      High: 67 °F

      NE 10kt
      < 1ft

    • Saturday Night

      Saturday Night:ENE wind 5 to 10 kt becoming NNW after midnight. Showers likely and possibly a thunderstorm.   Seas around 1 ft.

      Low: 62 °F

      ENE 10kt
      1ft

    • Sunday

      Sunday:NW wind 5 to 10 kt becoming N in the afternoon. A slight chance of showers before noon.   Seas 1 ft or less.

      High: 69 °F

      NW 10kt
      < 1ft

    • Sunday Night

      Sunday Night:N wind 10 to 15 kt. A slight chance of showers.   Seas around 1 ft.

      Low: 53 °F

      N 15kt
      1ft

    • Monday

      Monday:N wind 10 to 15 kt. Mostly sunny. Seas around 1 ft.

      High: 60 °F

      N 15kt
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:24 pm CST Dec 3, 2025
Forecast Valid: 2am CST Dec 4, 2025-6pm CST Dec 10, 2025

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Detailed Forecast


Thursday
E wind around 10 kt. Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. Some of the storms could produce heavy rainfall. Seas around 1 ft.
Thursday Night
E wind around 10 kt becoming NNW after midnight. Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then a chance of showers and thunderstorms after 2am. Seas around 1 ft.
Friday
N wind around 10 kt. Showers and possibly a thunderstorm. Seas around 1 ft.
Friday Night
Variable winds 5 kt or less. Showers likely. Seas 1 ft or less.
Saturday
NE wind 5 to 10 kt. Showers, with thunderstorms also possible after 9am. Seas 1 ft or less.
Saturday Night
ENE wind 5 to 10 kt becoming NNW after midnight. Showers likely and possibly a thunderstorm. Seas around 1 ft.
Sunday
NW wind 5 to 10 kt becoming N in the afternoon. A slight chance of showers before noon. Seas 1 ft or less.
Sunday Night
N wind 10 to 15 kt. A slight chance of showers. Seas around 1 ft.
Monday
N wind 10 to 15 kt. Mostly sunny. Seas around 1 ft.

*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: 29.21°N 90.04°W
Last Update: 11:24 pm CST Dec 3, 2025
Forecast Valid: 2am CST Dec 4, 2025-6pm CST Dec 10, 2025
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