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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:NE wind 16 to 21 kt. Mostly sunny. Seas around 1 ft.

      NE 21kt
      1ft

    • Tonight

      Tonight:NE wind 20 to 23 kt, with gusts as high as 29 kt. Mostly cloudy. Seas around 1 ft.

      NE 23kt
      1ft

    • Friday

      Friday:NNE wind 19 to 22 kt, with gusts as high as 31 kt. A chance of showers after 2pm.   Seas around 1 ft.

      NNE 22kt
      1ft

    • Friday Night

      Friday Night:N wind 24 to 26 kt, with gusts as high as 34 kt. Showers likely, mainly after 2am.   Seas 1 to 2 ft.

      N 26kt
      1-2ft

    • Saturday

      Saturday:N wind 22 to 25 kt, with gusts as high as 33 kt. Showers likely.   Seas around 1 ft.

      N 25kt
      1ft

    • Saturday Night

      Saturday Night:NNW wind around 23 kt, with gusts as high as 32 kt. Showers.   Seas around 1 ft.

      NNW 23kt
      1ft

    • Sunday

      Sunday:N wind 19 to 22 kt decreasing to 15 to 18 kt in the afternoon. Winds could gust as high as 31 kt. Showers.   Seas around 1 ft.

      N 22kt⇓
      1ft

    • Sunday Night

      Sunday Night:N wind 14 to 16 kt, with gusts as high as 26 kt. Showers likely.   Seas around 1 ft.

      N 16kt
      1ft

    • Monday

      Monday:N wind 8 to 12 kt. A chance of showers.   Seas 1 ft or less.

      N 12kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:06 am EDT Sep 24, 2026
Forecast Valid: 5am EDT Sep 24, 2026-6pm EDT Sep 30, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

Today
NE wind 16 to 21 kt. Mostly sunny. Seas around 1 ft.
Tonight
NE wind 20 to 23 kt, with gusts as high as 29 kt. Mostly cloudy. Seas around 1 ft.
Friday
NNE wind 19 to 22 kt, with gusts as high as 31 kt. A chance of showers after 2pm. Seas around 1 ft.
Friday Night
N wind 24 to 26 kt, with gusts as high as 34 kt. Showers likely, mainly after 2am. Seas 1 to 2 ft.
Saturday
N wind 22 to 25 kt, with gusts as high as 33 kt. Showers likely. Seas around 1 ft.
Saturday Night
NNW wind around 23 kt, with gusts as high as 32 kt. Showers. Seas around 1 ft.
Sunday
N wind 19 to 22 kt decreasing to 15 to 18 kt in the afternoon. Winds could gust as high as 31 kt. Showers. Seas around 1 ft.
Sunday Night
N wind 14 to 16 kt, with gusts as high as 26 kt. Showers likely. Seas around 1 ft.
Monday
N wind 8 to 12 kt. A chance of showers. Seas 1 ft or less.

*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: 3:06 am EDT Sep 24, 2026
Forecast Valid: 5am EDT Sep 24, 2026-6pm EDT Sep 30, 2026
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