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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]

    • Tonight

      Tonight:S wind 11 to 14 kt becoming SW after midnight. Winds could gust as high as 20 kt. Rain likely, mainly before 1am. Seas around 4 ft.

      SSW 14kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:W wind 16 to 19 kt increasing to 20 to 23 kt in the afternoon. Winds could gust as high as 29 kt. Cloudy through mid morning, then gradual clearing. Seas 5 to 6 ft.

      ⇑W 23kt
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday Night

      Thursday Night:W wind 24 to 26 kt, with gusts as high as 32 kt. Mostly cloudy. Seas around 6 ft.

      W 26kt
      6ft

      Gale Warning
      Gale Warning

    • Friday

      Friday:W wind 22 to 25 kt becoming W 17 to 20 kt in the afternoon. Winds could gust as high as 31 kt. Sunny. Seas 5 to 6 ft.

      W 25kt⇓
      5-6ft

      Gale Warning
      Gale Warning

    • Friday Night

      Friday Night:SW wind 18 to 20 kt, with gusts as high as 26 kt. A slight chance of rain after 1am. Seas 5 to 6 ft.

      SW 20kt
      5-6ft

    • Saturday

      Saturday:SW wind around 16 kt. A chance of rain. Seas around 5 ft.

      SW 16kt
      5ft

    • Saturday Night

      Saturday Night:WSW wind around 14 kt becoming WNW after midnight. Mostly cloudy. Seas 4 to 5 ft.

      WSW 14kt
      4-5ft

    • Sunday

      Sunday:WNW wind 14 to 19 kt. A chance of snow. Seas around 4 ft.

      WNW 19kt
      4ft

    • Sunday Night

      Sunday Night:WNW wind 19 to 22 kt. Partly cloudy. Seas around 4 ft.

      WNW 22kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 2:31 pm EST Jan 14, 2026
Forecast Valid: 7pm EST Jan 14, 2026-6pm EST Jan 21, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON...

Tonight
S wind 11 to 14 kt becoming SW after midnight. Winds could gust as high as 20 kt. Rain likely, mainly before 1am. Seas around 4 ft.
Thursday
W wind 16 to 19 kt increasing to 20 to 23 kt in the afternoon. Winds could gust as high as 29 kt. Cloudy through mid morning, then gradual clearing. Seas 5 to 6 ft.
Thursday Night
W wind 24 to 26 kt, with gusts as high as 32 kt. Mostly cloudy. Seas around 6 ft.
Friday
W wind 22 to 25 kt becoming W 17 to 20 kt in the afternoon. Winds could gust as high as 31 kt. Sunny. Seas 5 to 6 ft.
Friday Night
SW wind 18 to 20 kt, with gusts as high as 26 kt. A slight chance of rain after 1am. Seas 5 to 6 ft.
Saturday
SW wind around 16 kt. A chance of rain. Seas around 5 ft.
Saturday Night
WSW wind around 14 kt becoming WNW after midnight. Mostly cloudy. Seas 4 to 5 ft.
Sunday
WNW wind 14 to 19 kt. A chance of snow. Seas around 4 ft.
Sunday Night
WNW wind 19 to 22 kt. Partly cloudy. Seas around 4 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: 2:31 pm EST Jan 14, 2026
Forecast Valid: 7pm EST Jan 14, 2026-6pm EST Jan 21, 2026
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