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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]

    • Thursday

      Thursday:W wind 17 to 20 kt increasing to 20 to 23 kt in the afternoon. Winds could gust as high as 29 kt. Sunny through mid morning, then becoming mostly cloudy. Seas 4 to 5 ft.

      ⇑W 23kt
      4-5ft

      Gale Warning
      Gale Warning

    • Thursday Night

      Thursday Night:NW wind 19 to 24 kt becoming N 11 to 16 kt. Winds could gust as high as 32 kt. Mostly clear. Seas 4 ft subsiding to 2 ft.

      NW 24kt⇓
      4ftWaves Subsiding

      Gale Warning
      Gale Warning

    • Friday

      Friday:NNE wind 6 to 8 kt becoming SSE in the afternoon. A slight chance of light rain after 4pm. Seas around 2 ft.

      SSE 8kt
      2ft

    • Friday Night

      Friday Night:S wind around 8 kt becoming N after midnight. A chance of light rain, mainly after 7pm. Seas around 2 ft.

      ENE 8kt
      2ft

    • Saturday

      Saturday:NNW wind 8 to 11 kt becoming W in the afternoon. A slight chance of light rain before 1pm. Seas around 2 ft.

      W 11kt
      2ft

    • Saturday Night

      Saturday Night:W wind 10 to 12 kt. Partly cloudy. Seas 2 to 3 ft.

      W 12kt
      2-3ft

    • Sunday

      Sunday:NW wind 8 to 10 kt. Partly sunny. Seas 2 to 3 ft.

      NW 10kt
      2-3ft

    • Sunday Night

      Sunday Night:N wind 11 to 14 kt increasing to 16 to 19 kt after midnight. Mostly cloudy. Seas around 3 ft.

      ⇑N 19kt
      3ft

    • Monday

      Monday:N wind 18 to 21 kt, with gusts as high as 27 kt. Mostly sunny. Seas around 3 ft.

      N 21kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 2:27 am EST Dec 4, 2025
Forecast Valid: 3am EST Dec 4, 2025-6pm EST Dec 10, 2025

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Detailed Forecast

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH THIS

Thursday
W wind 17 to 20 kt increasing to 20 to 23 kt in the afternoon. Winds could gust as high as 29 kt. Sunny through mid morning, then becoming mostly cloudy. Seas 4 to 5 ft.
Thursday Night
NW wind 19 to 24 kt becoming N 11 to 16 kt. Winds could gust as high as 32 kt. Mostly clear. Seas 4 ft subsiding to 2 ft.
Friday
NNE wind 6 to 8 kt becoming SSE in the afternoon. A slight chance of light rain after 4pm. Seas around 2 ft.
Friday Night
S wind around 8 kt becoming N after midnight. A chance of light rain, mainly after 7pm. Seas around 2 ft.
Saturday
NNW wind 8 to 11 kt becoming W in the afternoon. A slight chance of light rain before 1pm. Seas around 2 ft.
Saturday Night
W wind 10 to 12 kt. Partly cloudy. Seas 2 to 3 ft.
Sunday
NW wind 8 to 10 kt. Partly sunny. Seas 2 to 3 ft.
Sunday Night
N wind 11 to 14 kt increasing to 16 to 19 kt after midnight. Mostly cloudy. Seas around 3 ft.
Monday
N wind 18 to 21 kt, with gusts as high as 27 kt. Mostly sunny. Seas around 3 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: 2:27 am EST Dec 4, 2025
Forecast Valid: 3am EST Dec 4, 2025-6pm EST Dec 10, 2025
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