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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Wednesday

      Wednesday:ENE wind 16 to 19 kt, with gusts as high as 26 kt. Partly sunny. Seas around 1 ft.

      ENE 19kt
      1ft

    • Wednesday Night

      Wednesday Night:NE wind around 18 kt, with gusts as high as 27 kt. Partly cloudy. Seas around 1 ft.

      NE 18kt
      1ft

    • Thursday

      Thursday:NE wind 14 to 19 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 1 ft.

      NE 19kt
      1ft

    • Thursday Night

      Thursday Night:NE wind 19 to 22 kt, with gusts as high as 29 kt. Mostly cloudy. Seas around 1 ft.

      NE 22kt
      1ft

    • Friday

      Friday:NNE wind around 22 kt, with gusts as high as 33 kt. A chance of showers.   Seas 1 ft or less.

      NNE 22kt
      < 1ft

    • Friday Night

      Friday Night:N wind 23 to 25 kt, with gusts as high as 35 kt. A chance of showers.   Seas 1 ft or less.

      N 25kt
      < 1ft

    • Saturday

      Saturday:N wind 21 to 24 kt, with gusts as high as 33 kt. Showers likely.   Seas 1 ft or less.

      N 24kt
      < 1ft

    • Saturday Night

      Saturday Night:N wind around 22 kt, with gusts as high as 35 kt. Showers likely.   Seas 1 ft or less building to 3 ft.

      N 22kt
      Waves Building3ft

    • Sunday

      Sunday:N wind 17 to 21 kt, with gusts as high as 33 kt. A chance of showers.   Seas 2 to 3 ft.

      N 21kt
      2-3ft


Associated Zone Forecast which includes this point

Last Update: 2:32 am EDT Sep 23, 2026
Forecast Valid: 3am EDT Sep 23, 2026-6pm EDT Sep 29, 2026

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Detailed Forecast

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

Wednesday
ENE wind 16 to 19 kt, with gusts as high as 26 kt. Partly sunny. Seas around 1 ft.
Wednesday Night
NE wind around 18 kt, with gusts as high as 27 kt. Partly cloudy. Seas around 1 ft.
Thursday
NE wind 14 to 19 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 1 ft.
Thursday Night
NE wind 19 to 22 kt, with gusts as high as 29 kt. Mostly cloudy. Seas around 1 ft.
Friday
NNE wind around 22 kt, with gusts as high as 33 kt. A chance of showers. Seas 1 ft or less.
Friday Night
N wind 23 to 25 kt, with gusts as high as 35 kt. A chance of showers. Seas 1 ft or less.
Saturday
N wind 21 to 24 kt, with gusts as high as 33 kt. Showers likely. Seas 1 ft or less.
Saturday Night
N wind around 22 kt, with gusts as high as 35 kt. Showers likely. Seas 1 ft or less building to 3 ft.
Sunday
N wind 17 to 21 kt, with gusts as high as 33 kt. A chance of showers. Seas 2 to 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: 40.91°N 73.39°W
Last Update: 2:32 am EDT Sep 23, 2026
Forecast Valid: 3am EDT Sep 23, 2026-6pm EDT Sep 29, 2026
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