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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:W wind 13 to 15 kt. Mostly cloudy. Seas around 1 ft.

      W 15kt
      1ft

    • Friday

      Friday:W wind 11 to 16 kt increasing to 18 to 23 kt. Mostly sunny. Seas 1 ft or less.

      ⇑W 23kt
      < 1ft

    • Friday Night

      Friday Night:NW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. Partly cloudy. Seas around 1 ft.

      NW 24kt⇓
      1ft

    • Saturday

      Saturday:NW wind 9 to 13 kt. Mostly sunny. Seas 1 ft or less.

      NW 13kt
      < 1ft

    • Saturday Night

      Saturday Night:N wind 7 to 9 kt. A chance of snow after 1am.   Seas around 1 ft.

      N 9kt
      1ft

    • Sunday

      Sunday:NE wind 11 to 16 kt increasing to 18 to 23 kt in the afternoon. Winds could gust as high as 31 kt. Snow. The snow could be heavy at times.   Seas 1 to 2 ft.

      ⇑NE 23kt
      1-2ft

    • Sunday Night

      Sunday Night:NE wind 25 to 28 kt decreasing to 21 to 24 kt after midnight. Winds could gust as high as 35 kt. Snow.   Seas around 2 ft.

      NE 28kt⇓
      2ft

    • Monday

      Monday:N wind 16 to 19 kt becoming NW 20 to 23 kt in the afternoon. Winds could gust as high as 31 kt. Snow likely.   Seas around 2 ft.

      ⇑NW 23kt
      2ft

    • Monday Night

      Monday Night:WNW wind 25 to 28 kt, with gusts as high as 36 kt. Partly cloudy. Seas around 2 ft.

      WNW 28kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 3:49 pm EST Jan 22, 2026
Forecast Valid: 4pm EST Jan 22, 2026-6pm EST Jan 29, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH

Tonight
W wind 13 to 15 kt. Mostly cloudy. Seas around 1 ft.
Friday
W wind 11 to 16 kt increasing to 18 to 23 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
NW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. Partly cloudy. Seas around 1 ft.
Saturday
NW wind 9 to 13 kt. Mostly sunny. Seas 1 ft or less.
Saturday Night
N wind 7 to 9 kt. A chance of snow after 1am. Seas around 1 ft.
Sunday
NE wind 11 to 16 kt increasing to 18 to 23 kt in the afternoon. Winds could gust as high as 31 kt. Snow. The snow could be heavy at times. Seas 1 to 2 ft.
Sunday Night
NE wind 25 to 28 kt decreasing to 21 to 24 kt after midnight. Winds could gust as high as 35 kt. Snow. Seas around 2 ft.
Monday
N wind 16 to 19 kt becoming NW 20 to 23 kt in the afternoon. Winds could gust as high as 31 kt. Snow likely. Seas around 2 ft.
Monday Night
WNW wind 25 to 28 kt, with gusts as high as 36 kt. Partly cloudy. Seas around 2 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: 3:49 pm EST Jan 22, 2026
Forecast Valid: 4pm EST Jan 22, 2026-6pm EST Jan 29, 2026
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