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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Saturday

      Saturday:N wind 6 to 11 kt becoming W in the afternoon. Mostly cloudy. Seas around 2 ft.

      W 11kt
      2ft

    • Saturday Night

      Saturday Night:W wind 12 to 15 kt becoming NW after midnight. Partly cloudy. Seas around 3 ft.

      WNW 15kt
      3ft

    • Sunday

      Sunday:NNW wind 6 to 9 kt becoming WSW in the afternoon. Partly sunny. Seas 2 to 3 ft.

      NNW 9kt
      2-3ft

    • Sunday Night

      Sunday Night:WSW wind 11 to 16 kt becoming NW 19 to 24 kt. Mostly cloudy. Seas 2 ft building to 4 ft.

      ⇑NW 24kt
      Waves Building4ft

    • Monday

      Monday:N wind 22 to 25 kt decreasing to 18 to 21 kt in the afternoon. Mostly sunny. Seas 3 to 4 ft.

      N 25kt⇓
      3-4ft

    • Monday Night

      Monday Night:N wind 13 to 16 kt decreasing to 10 to 13 kt after midnight. Partly cloudy. Seas around 2 ft.

      N 16kt⇓
      2ft

    • Tuesday

      Tuesday:NNE wind 8 to 11 kt becoming SW 13 to 18 kt in the morning. Partly sunny. Seas 2 to 3 ft.

      ⇑SW 18kt
      2-3ft

    • Tuesday Night

      Tuesday Night:WSW wind 18 to 22 kt. Mostly cloudy. Seas 4 to 5 ft.

      WSW 22kt
      4-5ft

    • Wednesday

      Wednesday:SSW wind 17 to 20 kt increasing to 21 to 24 kt in the afternoon. A chance of rain.   Seas 4 ft building to 7 ft.

      ⇑SSW 24kt
      Waves Building7ft


Associated Zone Forecast which includes this point

Last Update: 12:53 am EST Dec 6, 2025
Forecast Valid: 3am EST Dec 6, 2025-6pm EST Dec 12, 2025

View Nearby Observations

Detailed Forecast


Saturday
N wind 6 to 11 kt becoming W in the afternoon. Mostly cloudy. Seas around 2 ft.
Saturday Night
W wind 12 to 15 kt becoming NW after midnight. Partly cloudy. Seas around 3 ft.
Sunday
NNW wind 6 to 9 kt becoming WSW in the afternoon. Partly sunny. Seas 2 to 3 ft.
Sunday Night
WSW wind 11 to 16 kt becoming NW 19 to 24 kt. Mostly cloudy. Seas 2 ft building to 4 ft.
Monday
N wind 22 to 25 kt decreasing to 18 to 21 kt in the afternoon. Mostly sunny. Seas 3 to 4 ft.
Monday Night
N wind 13 to 16 kt decreasing to 10 to 13 kt after midnight. Partly cloudy. Seas around 2 ft.
Tuesday
NNE wind 8 to 11 kt becoming SW 13 to 18 kt in the morning. Partly sunny. Seas 2 to 3 ft.
Tuesday Night
WSW wind 18 to 22 kt. Mostly cloudy. Seas 4 to 5 ft.
Wednesday
SSW wind 17 to 20 kt increasing to 21 to 24 kt in the afternoon. A chance of rain. Seas 4 ft building 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: 12:53 am EST Dec 6, 2025
Forecast Valid: 3am EST Dec 6, 2025-6pm EST Dec 12, 2025
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