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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:SSW wind around 16 kt, with gusts as high as 22 kt. Mostly cloudy. Seas around 4 ft.

      SSW 16kt
      4ft

    • Wednesday

      Wednesday:S wind 19 to 24 kt, with gusts as high as 33 kt. Mostly cloudy. Seas 4 ft building to 6 ft.

      S 24kt
      Waves Building6ft

      Gale Warning
      Gale Warning

    • Wednesday Night

      Wednesday Night:S wind 17 to 20 kt decreasing to 12 to 15 kt after midnight. Winds could gust as high as 28 kt. Showers, mainly after 2am.  Patchy fog after 2am.  Seas 6 ft subsiding to 4 ft.

      S 20kt⇓
      6ftWaves Subsiding

      Gale Warning
      Gale Warning

    • Thursday

      Thursday:SSE wind 5 to 9 kt becoming SSW in the afternoon. Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm.  Patchy fog.  Seas around 3 ft.

      SSE 9kt
      3ft

    • Thursday Night

      Thursday Night:WNW wind 8 to 11 kt. A chance of showers and thunderstorms.   Seas 2 to 3 ft.

      WNW 11kt
      2-3ft

    • Friday

      Friday:NW wind 8 to 12 kt. A chance of showers before 2pm.   Seas around 4 ft.

      NW 12kt
      4ft

    • Friday Night

      Friday Night:WNW wind around 7 kt becoming WSW after midnight. Partly cloudy. Seas around 4 ft.

      W 7kt
      4ft

    • Saturday

      Saturday:WSW wind 8 to 11 kt becoming SSW 14 to 17 kt in the afternoon. Sunny. Seas 3 to 4 ft.

      ⇑SSW 17kt
      3-4ft

    • Saturday Night

      Saturday Night:SSW wind 16 to 19 kt becoming WSW 11 to 14 kt after midnight. Partly cloudy. Seas 5 ft subsiding to 3 ft.

      SSW 19kt⇓
      5ftWaves Subsiding


Associated Zone Forecast which includes this point

Last Update: 2:36 pm EDT May 12, 2026
Forecast Valid: 12am EDT May 13, 2026-6pm EDT May 19, 2026

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Detailed Forecast

...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH

Overnight
SSW wind around 16 kt, with gusts as high as 22 kt. Mostly cloudy. Seas around 4 ft.
Wednesday
S wind 19 to 24 kt, with gusts as high as 33 kt. Mostly cloudy. Seas 4 ft building to 6 ft.
Wednesday Night
S wind 17 to 20 kt decreasing to 12 to 15 kt after midnight. Winds could gust as high as 28 kt. Showers, mainly after 2am. Patchy fog after 2am. Seas 6 ft subsiding to 4 ft.
Thursday
SSE wind 5 to 9 kt becoming SSW in the afternoon. Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog. Seas around 3 ft.
Thursday Night
WNW wind 8 to 11 kt. A chance of showers and thunderstorms. Seas 2 to 3 ft.
Friday
NW wind 8 to 12 kt. A chance of showers before 2pm. Seas around 4 ft.
Friday Night
WNW wind around 7 kt becoming WSW after midnight. Partly cloudy. Seas around 4 ft.
Saturday
WSW wind 8 to 11 kt becoming SSW 14 to 17 kt in the afternoon. Sunny. Seas 3 to 4 ft.
Saturday Night
SSW wind 16 to 19 kt becoming WSW 11 to 14 kt after midnight. Partly cloudy. Seas 5 ft subsiding to 3 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: 2:36 pm EDT May 12, 2026
Forecast Valid: 12am EDT May 13, 2026-6pm EDT May 19, 2026
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