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Hazardous Weather Conditions

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New York, NY Local Forecast Office

19NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Christmas Day

      Christmas Day:W wind 15 to 17 kt becoming NW. Partly sunny. Seas around 2 ft.

      NW 17kt
      2ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:N wind 15 to 18 kt. Partly cloudy. Seas 2 to 3 ft.

      N 18kt
      2-3ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:N wind 11 to 14 kt becoming NE 7 to 10 kt in the afternoon. A chance of snow after 1pm. Seas around 2 ft.

      N 14kt⇓
      2ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday Night

      Friday Night:E wind 7 to 10 kt increasing to 12 to 15 kt after midnight. Snow before 1am, then snow, possibly mixed with rain. The snow could be heavy at times. Seas 2 to 3 ft.

      ⇑E 15kt
      2-3ft

    • Saturday

      Saturday:NNE wind 10 to 15 kt. A chance of rain and snow before 1pm, then a chance of snow. Seas around 3 ft.

      NNE 15kt
      3ft

    • Saturday Night

      Saturday Night:N wind 7 to 10 kt. Mostly cloudy. Seas around 2 ft.

      N 10kt
      2ft

    • Sunday

      Sunday:NNW wind 5 to 9 kt becoming WSW in the afternoon. A chance of rain after 1pm. Seas around 2 ft.

      W 9kt
      2ft

    • Sunday Night

      Sunday Night:SSW wind 9 to 12 kt increasing to 12 to 15 kt after midnight. Rain. Seas 2 ft building to 4 ft.

      ⇑SSW 15kt
      Waves Building4ft

    • Monday

      Monday:SSW wind 16 to 21 kt becoming W 21 to 26 kt in the afternoon. Winds could gust as high as 33 kt. Rain. Seas 4 to 5 ft.

      ⇑W 26kt
      4-5ft


Associated Zone Forecast which includes this point

Last Update: 1:36 am EST Dec 25, 2025
Forecast Valid: 12pm EST Dec 25, 2025-6pm EST Dec 31, 2025

View Nearby Observations

Detailed Forecast

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

Christmas Day
W wind 15 to 17 kt becoming NW. Partly sunny. Seas around 2 ft.
Tonight
N wind 15 to 18 kt. Partly cloudy. Seas 2 to 3 ft.
Friday
N wind 11 to 14 kt becoming NE 7 to 10 kt in the afternoon. A chance of snow after 1pm. Seas around 2 ft.
Friday Night
E wind 7 to 10 kt increasing to 12 to 15 kt after midnight. Snow before 1am, then snow, possibly mixed with rain. The snow could be heavy at times. Seas 2 to 3 ft.
Saturday
NNE wind 10 to 15 kt. A chance of rain and snow before 1pm, then a chance of snow. Seas around 3 ft.
Saturday Night
N wind 7 to 10 kt. Mostly cloudy. Seas around 2 ft.
Sunday
NNW wind 5 to 9 kt becoming WSW in the afternoon. A chance of rain after 1pm. Seas around 2 ft.
Sunday Night
SSW wind 9 to 12 kt increasing to 12 to 15 kt after midnight. Rain. Seas 2 ft building to 4 ft.
Monday
SSW wind 16 to 21 kt becoming W 21 to 26 kt in the afternoon. Winds could gust as high as 33 kt. Rain. Seas 4 to 5 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: 40.57°N 73.57°W
Last Update: 1:36 am EST Dec 25, 2025
Forecast Valid: 12pm EST Dec 25, 2025-6pm EST Dec 31, 2025
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