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

Hazardous Weather Conditions

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:SW wind 5 to 10 kt. Partly sunny. Seas 1 ft or less.

      High: 74 °F

      SW 10kt
      < 1ft

    • Tonight

      Tonight:WSW wind 10 to 15 kt becoming N 20 to 25 kt in the evening. Winds could gust as high as 35 kt. A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Patchy dense fog between 9pm and 10pm. Seas around 1 ft.

      Low: 48 °F

      ⇑N 25kt
      1ft

    • Sunday

      Sunday:N wind 20 to 25 kt, with gusts as high as 35 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 30 kt. Mostly clear. Seas 1 ft or less.

      Low: 40 °F

      N 20kt
      < 1ft

    • Monday

      Monday:N wind 15 to 20 kt, with gusts as high as 30 kt. Sunny. Seas around 1 ft.

      High: 56 °F

      N 20kt
      1ft

    • Monday Night

      Monday Night:NNW wind 10 to 15 kt becoming NNE after midnight. Winds could gust as high as 20 kt. Mostly clear. Seas 1 ft or less.

      Low: 41 °F

      NNW 15kt
      < 1ft

    • Tuesday

      Tuesday:NNE wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas 1 ft or less.

      High: 61 °F

      NNE 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSW wind 5 to 10 kt. Partly cloudy. Seas 1 ft or less.

      Low: 52 °F

      SSW 10kt
      < 1ft

    • Wednesday

      Wednesday:SSW wind 10 to 15 kt. Partly sunny. Seas around 1 ft.

      High: 71 °F

      SSW 15kt
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:33 am CST Feb 21, 2026
Forecast Valid: 1pm CST Feb 21, 2026-6pm CST Feb 27, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
SW wind 5 to 10 kt. Partly sunny. Seas 1 ft or less.
Tonight
WSW wind 10 to 15 kt becoming N 20 to 25 kt in the evening. Winds could gust as high as 35 kt. A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Patchy dense fog between 9pm and 10pm. Seas around 1 ft.
Sunday
N wind 20 to 25 kt, with gusts as high as 35 kt. Sunny. Seas around 1 ft.
Sunday Night
N wind around 20 kt, with gusts as high as 30 kt. Mostly clear. Seas 1 ft or less.
Monday
N wind 15 to 20 kt, with gusts as high as 30 kt. Sunny. Seas around 1 ft.
Monday Night
NNW wind 10 to 15 kt becoming NNE after midnight. Winds could gust as high as 20 kt. Mostly clear. Seas 1 ft or less.
Tuesday
NNE wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas 1 ft or less.
Tuesday Night
SSW wind 5 to 10 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
SSW wind 10 to 15 kt. Partly 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: 29.29°N 89.67°W
Last Update: 11:33 am CST Feb 21, 2026
Forecast Valid: 1pm CST Feb 21, 2026-6pm CST Feb 27, 2026
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