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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]

    • Tonight

      Tonight:W wind 18 to 20 kt. Mostly cloudy, then gradually becoming mostly clear. Seas 4 to 5 ft.

      W 20kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:W wind 15 to 20 kt increasing to 21 to 26 kt in the afternoon. Mostly sunny. Seas 3 ft building to 5 ft.

      ⇑W 26kt
      Waves Building5ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday Night

      Friday Night:NW wind 25 to 28 kt decreasing to 21 to 24 kt after midnight. Widespread freezing spray after 8pm. Partly cloudy. Seas 4 to 5 ft.

      NW 28kt⇓
      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 before 11am. Mostly sunny. Seas 2 to 3 ft.

      NNW 19kt⇓
      2-3ft

    • Saturday Night

      Saturday Night:N wind 10 to 12 kt becoming NNE after midnight. A chance of snow after 1am. Seas around 2 ft.

      NNE 12kt
      2ft

    • Sunday

      Sunday:ENE wind 16 to 21 kt increasing to 22 to 27 kt in the afternoon. Winds could gust as high as 35 kt. Snow. The snow could be heavy at times. Seas 2 ft building to 5 ft.

      ⇑ENE 27kt
      Waves Building5ft

    • Sunday Night

      Sunday Night:NE wind 24 to 28 kt, with gusts as high as 36 kt. Snow. Seas 6 to 7 ft.

      NE 28kt
      6-7ft

    • Monday

      Monday:NNE wind 23 to 26 kt becoming NW in the afternoon. Winds could gust as high as 34 kt. Snow likely. Seas 7 to 8 ft.

      NW 26kt
      7-8ft

    • Monday Night

      Monday Night:WNW wind 29 to 31 kt, with gusts as high as 39 kt. Partly cloudy. Seas around 8 ft.

      WNW 31kt
      8ft


Associated Zone Forecast which includes this point

Last Update: 3:49 pm EST Jan 22, 2026
Forecast Valid: 5pm EST Jan 22, 2026-6pm EST Jan 29, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT...

Tonight
W wind 18 to 20 kt. Mostly cloudy, then gradually becoming mostly clear. Seas 4 to 5 ft.
Friday
W wind 15 to 20 kt increasing to 21 to 26 kt in the afternoon. Mostly sunny. Seas 3 ft building to 5 ft.
Friday Night
NW wind 25 to 28 kt decreasing to 21 to 24 kt after midnight. Widespread freezing spray after 8pm. 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 before 11am. Mostly sunny. Seas 2 to 3 ft.
Saturday Night
N wind 10 to 12 kt becoming NNE after midnight. A chance of snow after 1am. Seas around 2 ft.
Sunday
ENE wind 16 to 21 kt increasing to 22 to 27 kt in the afternoon. Winds could gust as high as 35 kt. Snow. The snow could be heavy at times. Seas 2 ft building to 5 ft.
Sunday Night
NE wind 24 to 28 kt, with gusts as high as 36 kt. Snow. Seas 6 to 7 ft.
Monday
NNE wind 23 to 26 kt becoming NW in the afternoon. Winds could gust as high as 34 kt. Snow likely. Seas 7 to 8 ft.
Monday Night
WNW wind 29 to 31 kt, with gusts as high as 39 kt. Partly cloudy. 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: 3:49 pm EST Jan 22, 2026
Forecast Valid: 5pm EST Jan 22, 2026-6pm EST Jan 29, 2026
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