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

29NM NE Grand Isle LA

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:Variable winds 5 kt or less. A chance of showers, mainly before 2am. Seas 1 ft or less.

      Low: 61 °F

      Light Wind
      < 1ft

    • Sunday

      Sunday:NE wind 5 to 10 kt. A chance of showers, mainly between 3pm and 5pm. Seas 1 ft or less.

      High: 64 °F

      NE 10kt
      < 1ft

    • Sunday Night

      Sunday Night:E wind 5 to 10 kt becoming N 15 to 20 kt after midnight. Winds could gust as high as 25 kt. A chance of showers, mainly before midnight. Seas 1 ft building to 5 ft.

      Low: 53 °F

      ⇑N 20kt
      Waves Building5ft

    • Monday

      Monday:N wind 15 to 20 kt, with gusts as high as 30 kt. Mostly cloudy, then gradually becoming sunny. Seas 3 to 5 ft.

      High: 57 °F

      N 20kt
      3-5ft

    • Monday Night

      Monday Night:NE wind 10 to 15 kt, with gusts as high as 20 kt. Partly cloudy. Seas around 3 ft.

      Low: 50 °F

      NE 15kt
      3ft

    • Tuesday

      Tuesday:NE wind 5 to 10 kt. Sunny. Seas 1 to 2 ft.

      High: 57 °F

      NE 10kt
      1-2ft

    • Tuesday Night

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

      Low: 53 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:SW wind 5 to 10 kt. Sunny. Seas 1 ft or less.

      High: 64 °F

      SW 10kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SSW wind 5 to 10 kt. Mostly clear. Seas 1 to 2 ft.

      Low: 60 °F

      SSW 10kt
      1-2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:12 pm CST Dec 6, 2025
Forecast Valid: 9pm CST Dec 6, 2025-6pm CST Dec 13, 2025

View Nearby Observations

Detailed Forecast


Tonight
Variable winds 5 kt or less. A chance of showers, mainly before 2am. Seas 1 ft or less.
Sunday
NE wind 5 to 10 kt. A chance of showers, mainly between 3pm and 5pm. Seas 1 ft or less.
Sunday Night
E wind 5 to 10 kt becoming N 15 to 20 kt after midnight. Winds could gust as high as 25 kt. A chance of showers, mainly before midnight. Seas 1 ft building to 5 ft.
Monday
N wind 15 to 20 kt, with gusts as high as 30 kt. Mostly cloudy, then gradually becoming sunny. Seas 3 to 5 ft.
Monday Night
NE wind 10 to 15 kt, with gusts as high as 20 kt. Partly cloudy. Seas around 3 ft.
Tuesday
NE wind 5 to 10 kt. Sunny. Seas 1 to 2 ft.
Tuesday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Wednesday
SW wind 5 to 10 kt. Sunny. Seas 1 ft or less.
Wednesday Night
SSW wind 5 to 10 kt. Mostly clear. Seas 1 to 2 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: 29.61°N 89.63°W
Last Update: 9:12 pm CST Dec 6, 2025
Forecast Valid: 9pm CST Dec 6, 2025-6pm CST Dec 13, 2025
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