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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:NW wind around 21 kt. Widespread freezing spray. Mostly clear. Seas around 3 ft.

      NW 21kt
      3ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:WNW wind around 19 kt. Widespread freezing spray. Sunny. Seas around 3 ft.

      WNW 19kt
      3ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday Night

      Friday Night:NW wind 13 to 18 kt. Partly cloudy. Seas 2 to 3 ft.

      NW 18kt
      2-3ft

    • Saturday

      Saturday:N wind 10 to 13 kt. Partly sunny. Seas around 1 ft.

      N 13kt
      1ft

    • Saturday Night

      Saturday Night:N wind 17 to 22 kt increasing to 26 to 31 kt. Winds could gust as high as 37 kt. A chance of snow, mainly after 1am.  Widespread freezing spray after 1am.  Seas 2 ft building to 4 ft.

      ⇑N 31kt
      Waves Building4ft

    • Sunday

      Sunday:N wind 27 to 30 kt, with gusts as high as 42 kt. A chance of snow.   Seas 5 to 6 ft.

      N 30kt
      5-6ft

    • Sunday Night

      Sunday Night:NW wind 24 to 28 kt. Mostly cloudy. Seas around 6 ft.

      NW 28kt
      6ft

    • Monday

      Monday:NW wind 17 to 22 kt. Mostly sunny. Seas 5 to 6 ft.

      NW 22kt
      5-6ft

    • Monday Night

      Monday Night:NW wind around 16 kt. Partly cloudy. Seas 4 to 5 ft.

      NW 16kt
      4-5ft


Associated Zone Forecast which includes this point

Last Update: 1:13 pm EST Jan 29, 2026
Forecast Valid: 12am EST Jan 30, 2026-6pm EST Feb 5, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING

Overnight
NW wind around 21 kt. Widespread freezing spray. Mostly clear. Seas around 3 ft.
Friday
WNW wind around 19 kt. Widespread freezing spray. Sunny. Seas around 3 ft.
Friday Night
NW wind 13 to 18 kt. Partly cloudy. Seas 2 to 3 ft.
Saturday
N wind 10 to 13 kt. Partly sunny. Seas around 1 ft.
Saturday Night
N wind 17 to 22 kt increasing to 26 to 31 kt. Winds could gust as high as 37 kt. A chance of snow, mainly after 1am. Widespread freezing spray after 1am. Seas 2 ft building to 4 ft.
Sunday
N wind 27 to 30 kt, with gusts as high as 42 kt. A chance of snow. Seas 5 to 6 ft.
Sunday Night
NW wind 24 to 28 kt. Mostly cloudy. Seas around 6 ft.
Monday
NW wind 17 to 22 kt. Mostly sunny. Seas 5 to 6 ft.
Monday Night
NW wind around 16 kt. Partly cloudy. Seas 4 to 5 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: 1:13 pm EST Jan 29, 2026
Forecast Valid: 12am EST Jan 30, 2026-6pm EST Feb 5, 2026
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