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New York, NY Local Forecast Office

19NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:W wind 7 to 10 kt becoming SSW 14 to 19 kt after midnight. Snow likely after 4am.   Seas 1 ft building to 3 ft.

      ⇑SSW 19kt
      Waves Building3ft

    • Wednesday

      Wednesday:SW wind 20 to 23 kt decreasing to 16 to 19 kt in the afternoon. Snow, mixing with rain after 9am, then gradually ending.   Seas 5 to 6 ft.

      SW 23kt⇓
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:SW wind 12 to 15 kt becoming W after midnight. Partly cloudy. Seas 4 to 5 ft.

      SW 15kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:WNW wind 7 to 11 kt. A chance of snow, mainly after 4pm.   Seas 3 to 4 ft.

      WNW 11kt
      3-4ft

    • Thursday Night

      Thursday Night:W wind 6 to 10 kt becoming NNE after midnight. A chance of snow.   Seas 2 to 3 ft.

      NNE 10kt
      2-3ft

    • Friday

      Friday:NNE wind 6 to 9 kt becoming NNW in the afternoon. Mostly sunny. Seas around 2 ft.

      NNE 9kt
      2ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.

      Light Wind
      2ft

    • Saturday

      Saturday:SSW wind 6 to 8 kt. Mostly sunny. Seas around 2 ft.

      SSW 8kt
      2ft

    • Saturday Night

      Saturday Night:Variable winds less than 5 kt becoming WSW around 6 kt after midnight. Partly cloudy. Seas around 2 ft.

      ⇑WSW 6kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 4:55 pm EST Feb 24, 2026
Forecast Valid: 7pm EST Feb 24, 2026-6pm EST Mar 3, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH

Tonight
W wind 7 to 10 kt becoming SSW 14 to 19 kt after midnight. Snow likely after 4am. Seas 1 ft building to 3 ft.
Wednesday
SW wind 20 to 23 kt decreasing to 16 to 19 kt in the afternoon. Snow, mixing with rain after 9am, then gradually ending. Seas 5 to 6 ft.
Wednesday Night
SW wind 12 to 15 kt becoming W after midnight. Partly cloudy. Seas 4 to 5 ft.
Thursday
WNW wind 7 to 11 kt. A chance of snow, mainly after 4pm. Seas 3 to 4 ft.
Thursday Night
W wind 6 to 10 kt becoming NNE after midnight. A chance of snow. Seas 2 to 3 ft.
Friday
NNE wind 6 to 9 kt becoming NNW in the afternoon. Mostly sunny. Seas around 2 ft.
Friday Night
Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.
Saturday
SSW wind 6 to 8 kt. Mostly sunny. Seas around 2 ft.
Saturday Night
Variable winds less than 5 kt becoming WSW around 6 kt after midnight. Partly cloudy. Seas around 2 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: 4:55 pm EST Feb 24, 2026
Forecast Valid: 7pm EST Feb 24, 2026-6pm EST Mar 3, 2026
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