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New York, NY Local Forecast Office

5NM SSE Islip NY

Marine Point Forecast

[NOTICE]
    • Thanksgiving Day

      Thanksgiving Day:W wind 20 to 25 kt, with gusts as high as 31 kt. Mostly sunny. Seas around 1 ft.

      W 25kt
      1ft

    • Thursday Night

      Thursday Night:W wind 22 to 26 kt. Partly cloudy. Seas around 1 ft.

      W 26kt
      1ft

    • Friday

      Friday:W wind 25 to 28 kt increasing to 28 to 31 kt in the afternoon. Winds could gust as high as 38 kt. Mostly sunny. Seas around 1 ft.

      ⇑W 31kt
      1ft

    • Friday Night

      Friday Night:W wind 26 to 31 kt decreasing to 21 to 26 kt after midnight. Winds could gust as high as 37 kt. Mostly clear. Seas around 1 ft.

      W 31kt⇓
      1ft

    • Saturday

      Saturday:WNW wind 16 to 19 kt decreasing to 10 to 13 kt in the afternoon. Sunny. Seas 1 ft or less.

      WNW 19kt⇓
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds less than 5 kt becoming SSE 5 to 8 kt after midnight. Increasing clouds. Seas 1 ft or less.

      ⇑SSE 8kt
      < 1ft

    • Sunday

      Sunday:S wind 12 to 17 kt increasing to 17 to 22 kt in the afternoon. A chance of rain after 1pm.   Seas 1 ft or less.

      ⇑S 22kt
      < 1ft

    • Sunday Night

      Sunday Night:SSW wind 21 to 24 kt becoming W 18 to 21 kt after midnight. Rain likely.   Seas around 1 ft.

      SSW 24kt⇓
      1ft

    • Monday

      Monday:NW wind around 16 kt. Partly sunny. Seas around 1 ft.

      NW 16kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 1:06 am EST Nov 27, 2025
Forecast Valid: 2am EST Nov 27, 2025-6pm EST Dec 3, 2025

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Thanksgiving Day
W wind 20 to 25 kt, with gusts as high as 31 kt. Mostly sunny. Seas around 1 ft.
Thursday Night
W wind 22 to 26 kt. Partly cloudy. Seas around 1 ft.
Friday
W wind 25 to 28 kt increasing to 28 to 31 kt in the afternoon. Winds could gust as high as 38 kt. Mostly sunny. Seas around 1 ft.
Friday Night
W wind 26 to 31 kt decreasing to 21 to 26 kt after midnight. Winds could gust as high as 37 kt. Mostly clear. Seas around 1 ft.
Saturday
WNW wind 16 to 19 kt decreasing to 10 to 13 kt in the afternoon. Sunny. Seas 1 ft or less.
Saturday Night
Variable winds less than 5 kt becoming SSE 5 to 8 kt after midnight. Increasing clouds. Seas 1 ft or less.
Sunday
S wind 12 to 17 kt increasing to 17 to 22 kt in the afternoon. A chance of rain after 1pm. Seas 1 ft or less.
Sunday Night
SSW wind 21 to 24 kt becoming W 18 to 21 kt after midnight. Rain likely. Seas around 1 ft.
Monday
NW wind around 16 kt. Partly 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: 40.66°N 73.17°W
Last Update: 1:06 am EST Nov 27, 2025
Forecast Valid: 2am EST Nov 27, 2025-6pm EST Dec 3, 2025
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