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New York, NY Local Forecast Office

13NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:N wind 16 to 19 kt becoming NNW in the evening. Cloudy during the early evening, then gradual clearing. Seas around 1 ft.

      NNW 19kt
      1ft

    • Wednesday

      Wednesday:NNW wind 9 to 12 kt becoming WNW 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.

      NNW 12kt⇓
      < 1ft

    • Wednesday Night

      Wednesday Night:WSW wind 6 to 9 kt increasing to 10 to 13 kt after midnight. Mostly clear. Seas 1 ft or less.

      ⇑WSW 13kt
      < 1ft

    • Thursday

      Thursday:WSW wind 13 to 16 kt becoming WNW 17 to 20 kt in the afternoon. Winds could gust as high as 26 kt. Partly sunny. Seas around 1 ft.

      ⇑WNW 20kt
      1ft

    • Thursday Night

      Thursday Night:NNW wind 17 to 22 kt decreasing to 9 to 14 kt. Mostly clear. Seas around 1 ft.

      NNW 22kt⇓
      1ft

    • Friday

      Friday:N wind around 7 kt becoming SSW in the morning. Increasing clouds. Seas 1 ft or less.

      SSW 7kt
      < 1ft

    • Friday Night

      Friday Night:WSW wind around 7 kt becoming N after midnight. A chance of snow before 1am, then a chance of rain and snow.   Seas 1 ft or less.

      WSW 7kt
      < 1ft

    • Saturday

      Saturday:N wind 6 to 8 kt becoming W in the afternoon. A chance of rain before 1pm.   Seas 1 ft or less.

      W 8kt
      < 1ft

    • Saturday Night

      Saturday Night:W wind around 10 kt. Partly cloudy. Seas 1 ft or less.

      W 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 5:30 pm EST Dec 2, 2025
Forecast Valid: 7pm EST Dec 2, 2025-6pm EST Dec 9, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Tonight
N wind 16 to 19 kt becoming NNW in the evening. Cloudy during the early evening, then gradual clearing. Seas around 1 ft.
Wednesday
NNW wind 9 to 12 kt becoming WNW 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.
Wednesday Night
WSW wind 6 to 9 kt increasing to 10 to 13 kt after midnight. Mostly clear. Seas 1 ft or less.
Thursday
WSW wind 13 to 16 kt becoming WNW 17 to 20 kt in the afternoon. Winds could gust as high as 26 kt. Partly sunny. Seas around 1 ft.
Thursday Night
NNW wind 17 to 22 kt decreasing to 9 to 14 kt. Mostly clear. Seas around 1 ft.
Friday
N wind around 7 kt becoming SSW in the morning. Increasing clouds. Seas 1 ft or less.
Friday Night
WSW wind around 7 kt becoming N after midnight. A chance of snow before 1am, then a chance of rain and snow. Seas 1 ft or less.
Saturday
N wind 6 to 8 kt becoming W in the afternoon. A chance of rain before 1pm. Seas 1 ft or less.
Saturday Night
W wind around 10 kt. Partly cloudy. 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.
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ABOUT THIS FORECAST

Point Forecast: 40.89°N 73.42°W
Last Update: 5:30 pm EST Dec 2, 2025
Forecast Valid: 7pm EST Dec 2, 2025-6pm EST Dec 9, 2025
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