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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Friday

      Friday:W wind 12 to 17 kt increasing to 17 to 22 kt in the afternoon. Winds could gust as high as 29 kt. Mostly sunny. Seas 1 ft or less.

      ⇑W 22kt
      < 1ft

    • Friday Night

      Friday Night:NW wind 21 to 24 kt decreasing to 17 to 20 kt after midnight. Winds could gust as high as 30 kt. Partly cloudy. Seas around 1 ft.

      NW 24kt⇓
      1ft

    • Saturday

      Saturday:NNW wind 12 to 15 kt decreasing to 9 to 12 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      NNW 15kt⇓
      < 1ft

    • Saturday Night

      Saturday Night:NNW wind around 9 kt becoming NNE after midnight. A chance of snow after 1am.   Seas 1 ft or less.

      NNW 9kt
      < 1ft

    • Sunday

      Sunday:ENE wind 11 to 16 kt increasing to 19 to 24 kt in the afternoon. Snow. The snow could be heavy at times.   Seas 1 ft or less.

      ⇑ENE 24kt
      < 1ft

    • Sunday Night

      Sunday Night:NE wind 20 to 24 kt, with gusts as high as 35 kt. Snow before 1am, then snow and sleet between 1am and 4am, then snow after 4am.   Seas around 1 ft.

      NE 24kt
      1ft

    • Monday

      Monday:NNE wind 17 to 20 kt becoming N 14 to 17 kt. Snow likely, mainly before 1pm.   Seas around 1 ft.

      NNE 20kt⇓
      1ft

    • Monday Night

      Monday Night:WNW wind 25 to 29 kt. Partly cloudy. Seas around 1 ft.

      WNW 29kt
      1ft

    • Tuesday

      Tuesday:W wind 16 to 20 kt. Mostly sunny. Seas around 1 ft.

      W 20kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 1:37 am EST Jan 23, 2026
Forecast Valid: 2am EST Jan 23, 2026-6pm EST Jan 29, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EST THIS MORNING

Friday
W wind 12 to 17 kt increasing to 17 to 22 kt in the afternoon. Winds could gust as high as 29 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
NW wind 21 to 24 kt decreasing to 17 to 20 kt after midnight. Winds could gust as high as 30 kt. Partly cloudy. Seas around 1 ft.
Saturday
NNW wind 12 to 15 kt decreasing to 9 to 12 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Saturday Night
NNW wind around 9 kt becoming NNE after midnight. A chance of snow after 1am. Seas 1 ft or less.
Sunday
ENE wind 11 to 16 kt increasing to 19 to 24 kt in the afternoon. Snow. The snow could be heavy at times. Seas 1 ft or less.
Sunday Night
NE wind 20 to 24 kt, with gusts as high as 35 kt. Snow before 1am, then snow and sleet between 1am and 4am, then snow after 4am. Seas around 1 ft.
Monday
NNE wind 17 to 20 kt becoming N 14 to 17 kt. Snow likely, mainly before 1pm. Seas around 1 ft.
Monday Night
WNW wind 25 to 29 kt. Partly cloudy. Seas around 1 ft.
Tuesday
W wind 16 to 20 kt. Mostly sunny. Seas around 1 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: 40.91°N 73.39°W
Last Update: 1:37 am EST Jan 23, 2026
Forecast Valid: 2am EST Jan 23, 2026-6pm EST Jan 29, 2026
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