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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:N wind 13 to 17 kt becoming NW in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas around 3 ft.

      NNW 17kt
      3ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:NW wind 8 to 13 kt becoming variable and less than 5 kt after midnight. Winds could gust as high as 22 kt. Mostly clear. Seas 2 to 3 ft.

      NW 13kt⇓
      2-3ft

    • Sunday

      Sunday:SSW wind 5 to 10 kt increasing to 15 to 20 kt. Sunny. Seas 1 ft building to 3 ft.

      ⇑SSW 20kt
      Waves Building3ft

    • Sunday Night

      Sunday Night:SSW wind 19 to 24 kt. Mostly cloudy. Seas 5 to 6 ft.

      SSW 24kt
      5-6ft

    • Monday

      Monday:SW wind around 17 kt. Mostly cloudy. Seas around 4 ft.

      SW 17kt
      4ft

    • Monday Night

      Monday Night:SSW wind around 14 kt. A chance of rain after 2am.   Seas around 4 ft.

      SSW 14kt
      4ft

    • Tuesday

      Tuesday:SSW wind 15 to 20 kt. A chance of rain before 2pm.   Seas 4 to 5 ft.

      SSW 20kt
      4-5ft

    • Tuesday Night

      Tuesday Night:SSW wind 27 to 29 kt. Partly cloudy. Seas 7 to 8 ft.

      SSW 29kt
      7-8ft

    • Wednesday

      Wednesday:SSW wind around 24 kt. Rain likely.   Seas around 8 ft.

      SSW 24kt
      8ft


Associated Zone Forecast which includes this point

Last Update: 4:58 am EDT Mar 28, 2026
Forecast Valid: 6am EDT Mar 28, 2026-6pm EDT Apr 3, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING

Today
N wind 13 to 17 kt becoming NW in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas around 3 ft.
Tonight
NW wind 8 to 13 kt becoming variable and less than 5 kt after midnight. Winds could gust as high as 22 kt. Mostly clear. Seas 2 to 3 ft.
Sunday
SSW wind 5 to 10 kt increasing to 15 to 20 kt. Sunny. Seas 1 ft building to 3 ft.
Sunday Night
SSW wind 19 to 24 kt. Mostly cloudy. Seas 5 to 6 ft.
Monday
SW wind around 17 kt. Mostly cloudy. Seas around 4 ft.
Monday Night
SSW wind around 14 kt. A chance of rain after 2am. Seas around 4 ft.
Tuesday
SSW wind 15 to 20 kt. A chance of rain before 2pm. Seas 4 to 5 ft.
Tuesday Night
SSW wind 27 to 29 kt. Partly cloudy. Seas 7 to 8 ft.
Wednesday
SSW wind around 24 kt. Rain likely. Seas around 8 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: 40.53°N 73.44°W
Last Update: 4:58 am EDT Mar 28, 2026
Forecast Valid: 6am EDT Mar 28, 2026-6pm EDT Apr 3, 2026
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