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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:W wind 27 to 29 kt. Mostly cloudy. Seas around 6 ft.

      W 29kt
      6ft

      Gale Warning
      Gale Warning

    • Friday

      Friday:W wind 24 to 29 kt decreasing to 19 to 24 kt in the afternoon. Sunny. Seas 6 ft subsiding to 4 ft.

      W 29kt⇓
      6ftWaves Subsiding

      Gale Warning
      Gale Warning

    • Friday Night

      Friday Night:SW wind 16 to 19 kt. A slight chance of snow after 1am.   Seas 4 to 5 ft.

      SW 19kt
      4-5ft

    • Saturday

      Saturday:SW wind around 15 kt. A chance of rain and snow before 1pm, then a chance of rain.   Seas around 5 ft.

      SW 15kt
      5ft

    • Saturday Night

      Saturday Night:WSW wind 11 to 13 kt becoming W after midnight. Mostly cloudy. Seas 4 to 5 ft.

      WSW 13kt
      4-5ft

    • Sunday

      Sunday:WNW wind 12 to 15 kt. A chance of snow after 1pm.   Seas 3 to 4 ft.

      WNW 15kt
      3-4ft

    • Sunday Night

      Sunday Night:WNW wind 16 to 18 kt. Mostly cloudy, then gradually becoming mostly clear. Seas around 3 ft.

      WNW 18kt
      3ft

    • M.L.King Day

      M.L.King Day:WSW wind 18 to 21 kt increasing to 23 to 26 kt in the afternoon. Sunny. Seas 3 ft building to 5 ft.

      ⇑WSW 26kt
      Waves Building5ft

    • Monday Night

      Monday Night:W wind 30 to 32 kt. Partly cloudy. Seas 6 to 7 ft.

      W 32kt
      6-7ft


Associated Zone Forecast which includes this point

Last Update: 12:42 pm EST Jan 15, 2026
Forecast Valid: 12am EST Jan 16, 2026-6pm EST Jan 22, 2026

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Detailed Forecast

...GALE WARNING IN EFFECT THROUGH FRIDAY MORNING...

Overnight
W wind 27 to 29 kt. Mostly cloudy. Seas around 6 ft.
Friday
W wind 24 to 29 kt decreasing to 19 to 24 kt in the afternoon. Sunny. Seas 6 ft subsiding to 4 ft.
Friday Night
SW wind 16 to 19 kt. A slight chance of snow after 1am. Seas 4 to 5 ft.
Saturday
SW wind around 15 kt. A chance of rain and snow before 1pm, then a chance of rain. Seas around 5 ft.
Saturday Night
WSW wind 11 to 13 kt becoming W after midnight. Mostly cloudy. Seas 4 to 5 ft.
Sunday
WNW wind 12 to 15 kt. A chance of snow after 1pm. Seas 3 to 4 ft.
Sunday Night
WNW wind 16 to 18 kt. Mostly cloudy, then gradually becoming mostly clear. Seas around 3 ft.
M.L.King Day
WSW wind 18 to 21 kt increasing to 23 to 26 kt in the afternoon. Sunny. Seas 3 ft building to 5 ft.
Monday Night
W wind 30 to 32 kt. Partly cloudy. Seas 6 to 7 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: 40.53°N 73.44°W
Last Update: 12:42 pm EST Jan 15, 2026
Forecast Valid: 12am EST Jan 16, 2026-6pm EST Jan 22, 2026
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