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

24NM WSW Grand Isle LA

Marine Point Forecast

[NOTICE]

    • This Afternoon

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

      High: 71 °F

      Light Wind
      < 1ft

    • Tonight

      Tonight:SE wind 5 to 10 kt becoming S after midnight. Partly cloudy. Seas around 1 ft.

      Low: 69 °F

      SE 10kt
      1ft

    • Sunday

      Sunday:S wind 10 to 15 kt. Mostly sunny. Seas around 1 ft.

      High: 74 °F

      S 15kt
      1ft

    • Sunday Night

      Sunday Night:S wind 15 to 20 kt becoming NW 25 to 30 kt after midnight. A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Patchy fog between 11pm and 4am. Seas around 1 ft.

      Low: 52 °F

      ⇑NW 30kt
      1ft

    • Monday

      Monday:NNW wind 25 to 35 kt. A slight chance of showers before 1pm. Seas around 1 ft.

      High: 58 °F

      NNW 35kt
      1ft

    • Monday Night

      Monday Night:N wind 20 to 25 kt. Mostly cloudy. Seas around 1 ft.

      Low: 46 °F

      N 25kt
      1ft

    • Tuesday

      Tuesday:NNE wind 10 to 20 kt. Mostly sunny. Seas around 1 ft.

      High: 55 °F

      NNE 20kt
      1ft

    • Tuesday Night

      Tuesday Night:ENE wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.

      Low: 53 °F

      ENE 10kt
      < 1ft

    • Wednesday

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

      High: 62 °F

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:02 pm CDT Mar 14, 2026
Forecast Valid: 12pm CDT Mar 14, 2026-6pm CDT Mar 20, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
Tonight
SE wind 5 to 10 kt becoming S after midnight. Partly cloudy. Seas around 1 ft.
Sunday
S wind 10 to 15 kt. Mostly sunny. Seas around 1 ft.
Sunday Night
S wind 15 to 20 kt becoming NW 25 to 30 kt after midnight. A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Patchy fog between 11pm and 4am. Seas around 1 ft.
Monday
NNW wind 25 to 35 kt. A slight chance of showers before 1pm. Seas around 1 ft.
Monday Night
N wind 20 to 25 kt. Mostly cloudy. Seas around 1 ft.
Tuesday
NNE wind 10 to 20 kt. Mostly sunny. Seas around 1 ft.
Tuesday Night
ENE wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.
Wednesday
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

*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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 29.13°N 90.41°W
Last Update: 12:02 pm CDT Mar 14, 2026
Forecast Valid: 12pm CDT Mar 14, 2026-6pm CDT Mar 20, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data