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Hazardous Weather Conditions

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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:E wind 14 to 18 kt, with gusts as high as 24 kt. Mostly cloudy. Seas 3 to 4 ft.

      E 18kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:E wind around 14 kt, with gusts as high as 20 kt. A chance of rain after 5am. Seas around 4 ft.

      E 14kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday

      Saturday:E wind 16 to 21 kt, with gusts as high as 27 kt. A chance of rain before 8am, then showers likely between 8am and 2pm, then rain after 2pm. Seas 4 ft building to 6 ft.

      E 21kt
      Waves Building6ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday Night

      Saturday Night:E wind 23 to 25 kt, with gusts as high as 31 kt. Rain, with thunderstorms also possible after 2am. Seas 7 ft building to 9 ft.

      E 25kt
      Waves Building9ft

    • Sunday

      Sunday:E wind 23 to 26 kt decreasing to 18 to 21 kt in the afternoon. Winds could gust as high as 32 kt. Rain and possibly a thunderstorm before 2pm, then rain likely. Seas around 9 ft.

      E 26kt⇓
      9ft

    • Sunday Night

      Sunday Night:E wind 5 to 10 kt becoming N after midnight. Rain likely, mainly after 2am. Seas 8 ft subsiding to 6 ft.

      E 10kt
      8ftWaves Subsiding

    • Memorial Day

      Memorial Day:Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Showers likely, mainly before 2pm. Seas 5 to 6 ft.

      ⇑SSW 7kt
      5-6ft

    • Monday Night

      Monday Night:SSW wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers. Seas around 4 ft.

      SSW 6kt⇓
      4ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. Mostly cloudy. Seas around 3 ft.

      ⇑SSW 6kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 6:21 am EDT May 22, 2026
Forecast Valid: 7am EDT May 22, 2026-6pm EDT May 28, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING

Today
E wind 14 to 18 kt, with gusts as high as 24 kt. Mostly cloudy. Seas 3 to 4 ft.
Tonight
E wind around 14 kt, with gusts as high as 20 kt. A chance of rain after 5am. Seas around 4 ft.
Saturday
E wind 16 to 21 kt, with gusts as high as 27 kt. A chance of rain before 8am, then showers likely between 8am and 2pm, then rain after 2pm. Seas 4 ft building to 6 ft.
Saturday Night
E wind 23 to 25 kt, with gusts as high as 31 kt. Rain, with thunderstorms also possible after 2am. Seas 7 ft building to 9 ft.
Sunday
E wind 23 to 26 kt decreasing to 18 to 21 kt in the afternoon. Winds could gust as high as 32 kt. Rain and possibly a thunderstorm before 2pm, then rain likely. Seas around 9 ft.
Sunday Night
E wind 5 to 10 kt becoming N after midnight. Rain likely, mainly after 2am. Seas 8 ft subsiding to 6 ft.
Memorial Day
Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Showers likely, mainly before 2pm. Seas 5 to 6 ft.
Monday Night
SSW wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers. Seas around 4 ft.
Tuesday
Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. Mostly cloudy. Seas around 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: 6:21 am EDT May 22, 2026
Forecast Valid: 7am EDT May 22, 2026-6pm EDT May 28, 2026
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