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Hazardous Weather Conditions

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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:ENE wind 18 to 21 kt becoming NNE 13 to 16 kt in the afternoon. A chance of rain, mixing with snow after 8am, then gradually ending. Seas around 4 ft.

      ENE 21kt⇓
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:NNW wind 8 to 10 kt. Partly cloudy. Seas 3 to 4 ft.

      NNW 10kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Sunday

      Sunday:NW wind 6 to 9 kt becoming WSW in the afternoon. Increasing clouds. Seas 2 to 3 ft.

      WSW 9kt
      2-3ft

    • Sunday Night

      Sunday Night:SSW wind 11 to 14 kt increasing to 16 to 19 kt after midnight. Rain. Seas 2 ft building to 4 ft.

      ⇑SSW 19kt
      Waves Building4ft

    • Monday

      Monday:SSW wind 20 to 23 kt increasing to 23 to 26 kt in the afternoon. Rain. Seas 5 ft building to 7 ft.

      ⇑SSW 26kt
      Waves Building7ft

    • Monday Night

      Monday Night:W wind 33 to 38 kt. Partly cloudy. Seas 8 to 9 ft.

      W 38kt
      8-9ft

    • Tuesday

      Tuesday:W wind 32 to 36 kt. Partly sunny. Seas 7 to 8 ft.

      W 36kt
      7-8ft

    • Tuesday Night

      Tuesday Night:W wind 30 to 33 kt decreasing to 26 to 29 kt after midnight. Mostly cloudy. Seas 6 to 7 ft.

      W 33kt⇓
      6-7ft

    • Wednesday

      Wednesday:W wind 24 to 26 kt. Partly sunny. Seas around 5 ft.

      W 26kt
      5ft


Associated Zone Forecast which includes this point

Last Update: 5:20 am EST Dec 27, 2025
Forecast Valid: 7am EST Dec 27, 2025-6pm EST Jan 2, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

Today
ENE wind 18 to 21 kt becoming NNE 13 to 16 kt in the afternoon. A chance of rain, mixing with snow after 8am, then gradually ending. Seas around 4 ft.
Tonight
NNW wind 8 to 10 kt. Partly cloudy. Seas 3 to 4 ft.
Sunday
NW wind 6 to 9 kt becoming WSW in the afternoon. Increasing clouds. Seas 2 to 3 ft.
Sunday Night
SSW wind 11 to 14 kt increasing to 16 to 19 kt after midnight. Rain. Seas 2 ft building to 4 ft.
Monday
SSW wind 20 to 23 kt increasing to 23 to 26 kt in the afternoon. Rain. Seas 5 ft building to 7 ft.
Monday Night
W wind 33 to 38 kt. Partly cloudy. Seas 8 to 9 ft.
Tuesday
W wind 32 to 36 kt. Partly sunny. Seas 7 to 8 ft.
Tuesday Night
W wind 30 to 33 kt decreasing to 26 to 29 kt after midnight. Mostly cloudy. Seas 6 to 7 ft.
Wednesday
W wind 24 to 26 kt. Partly sunny. Seas around 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: 5:20 am EST Dec 27, 2025
Forecast Valid: 7am EST Dec 27, 2025-6pm EST Jan 2, 2026
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