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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:W wind 16 to 19 kt increasing to 22 to 25 kt in the afternoon. Winds could gust as high as 32 kt. Mostly sunny. Seas 4 to 5 ft.

      ⇑W 25kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:NW wind 22 to 26 kt, with gusts as high as 32 kt. Widespread freezing spray. Partly cloudy. Seas 4 to 5 ft.

      NW 26kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday

      Saturday:NNW wind 16 to 19 kt decreasing to 12 to 15 kt in the afternoon. Widespread freezing spray between 7am and 1pm. Partly sunny. Seas 2 to 3 ft.

      NNW 19kt⇓
      2-3ft

    • Saturday Night

      Saturday Night:N wind 10 to 13 kt. A chance of snow after 1am. Seas around 2 ft.

      N 13kt
      2ft

    • Sunday

      Sunday:ENE wind 16 to 21 kt increasing to 24 to 29 kt. Snow. The snow could be heavy at times. Seas 2 ft building to 6 ft.

      ⇑ENE 29kt
      Waves Building6ft

    • Sunday Night

      Sunday Night:ENE wind 24 to 29 kt, with gusts as high as 36 kt. Snow and sleet before 1am, then rain and sleet between 1am and 4am, then snow and sleet after 4am. Seas 7 to 8 ft.

      ENE 29kt
      7-8ft

    • Monday

      Monday:NNE wind 22 to 26 kt becoming NW in the afternoon. Snow, mainly before 1pm. Seas around 8 ft.

      NW 26kt
      8ft

    • Monday Night

      Monday Night:WNW wind 32 to 36 kt. A chance of snow. Seas 8 to 9 ft.

      WNW 36kt
      8-9ft

    • Tuesday

      Tuesday:W wind 23 to 27 kt. Mostly sunny. Seas 6 to 7 ft.

      W 27kt
      6-7ft


Associated Zone Forecast which includes this point

Last Update: 2:28 am EST Jan 23, 2026
Forecast Valid: 7am EST Jan 23, 2026-6pm EST Jan 29, 2026

View Nearby Observations

Detailed Forecast

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

Today
W wind 16 to 19 kt increasing to 22 to 25 kt in the afternoon. Winds could gust as high as 32 kt. Mostly sunny. Seas 4 to 5 ft.
Tonight
NW wind 22 to 26 kt, with gusts as high as 32 kt. Widespread freezing spray. Partly cloudy. Seas 4 to 5 ft.
Saturday
NNW wind 16 to 19 kt decreasing to 12 to 15 kt in the afternoon. Widespread freezing spray between 7am and 1pm. Partly sunny. Seas 2 to 3 ft.
Saturday Night
N wind 10 to 13 kt. A chance of snow after 1am. Seas around 2 ft.
Sunday
ENE wind 16 to 21 kt increasing to 24 to 29 kt. Snow. The snow could be heavy at times. Seas 2 ft building to 6 ft.
Sunday Night
ENE wind 24 to 29 kt, with gusts as high as 36 kt. Snow and sleet before 1am, then rain and sleet between 1am and 4am, then snow and sleet after 4am. Seas 7 to 8 ft.
Monday
NNE wind 22 to 26 kt becoming NW in the afternoon. Snow, mainly before 1pm. Seas around 8 ft.
Monday Night
WNW wind 32 to 36 kt. A chance of snow. Seas 8 to 9 ft.
Tuesday
W wind 23 to 27 kt. Mostly sunny. Seas 6 to 7 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: 2:28 am EST Jan 23, 2026
Forecast Valid: 7am EST Jan 23, 2026-6pm EST Jan 29, 2026
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