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Hazardous Weather Conditions

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New York, NY Local Forecast Office

7NM S Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:SW wind 15 to 18 kt increasing to 18 to 21 kt in the evening. Winds could gust as high as 27 kt. Mostly cloudy. Seas 2 ft building to 4 ft.

      ⇑SW 21kt
      Waves Building4ft

    • Wednesday

      Wednesday:SSW wind 21 to 24 kt increasing to 25 to 28 kt in the afternoon. Winds could gust as high as 38 kt. Rain likely after 1pm. Seas 4 ft building to 7 ft.

      ⇑SSW 28kt
      Waves Building7ft

    • Wednesday Night

      Wednesday Night:WSW wind 23 to 26 kt becoming W after midnight. Winds could gust as high as 33 kt. A chance of rain before 1am. Seas 5 to 6 ft.

      WSW 26kt
      5-6ft

    • Thursday

      Thursday:W wind around 25 kt, with gusts as high as 35 kt. Mostly sunny. Seas around 4 ft.

      W 25kt
      4ft

    • Thursday Night

      Thursday Night:W wind 25 to 28 kt decreasing to 22 to 25 kt after midnight. Winds could gust as high as 35 kt. Partly cloudy. Seas 3 to 4 ft.

      W 28kt⇓
      3-4ft

    • Friday

      Friday:W wind 16 to 19 kt, with gusts as high as 27 kt. Mostly sunny. Seas 2 to 3 ft.

      W 19kt
      2-3ft

    • Friday Night

      Friday Night:W wind 12 to 15 kt, with gusts as high as 21 kt. Mostly cloudy. Seas around 2 ft.

      W 15kt
      2ft

    • Saturday

      Saturday:W wind 13 to 18 kt, with gusts as high as 26 kt. Mostly cloudy. Seas 2 to 3 ft.

      W 18kt
      2-3ft

    • Saturday Night

      Saturday Night:W wind around 17 kt, with gusts as high as 23 kt. A chance of snow. Seas 2 to 3 ft.

      W 17kt
      2-3ft


Associated Zone Forecast which includes this point

Last Update: 5:42 pm EST Dec 9, 2025
Forecast Valid: 6pm EST Dec 9, 2025-6pm EST Dec 16, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Tonight
SW wind 15 to 18 kt increasing to 18 to 21 kt in the evening. Winds could gust as high as 27 kt. Mostly cloudy. Seas 2 ft building to 4 ft.
Wednesday
SSW wind 21 to 24 kt increasing to 25 to 28 kt in the afternoon. Winds could gust as high as 38 kt. Rain likely after 1pm. Seas 4 ft building to 7 ft.
Wednesday Night
WSW wind 23 to 26 kt becoming W after midnight. Winds could gust as high as 33 kt. A chance of rain before 1am. Seas 5 to 6 ft.
Thursday
W wind around 25 kt, with gusts as high as 35 kt. Mostly sunny. Seas around 4 ft.
Thursday Night
W wind 25 to 28 kt decreasing to 22 to 25 kt after midnight. Winds could gust as high as 35 kt. Partly cloudy. Seas 3 to 4 ft.
Friday
W wind 16 to 19 kt, with gusts as high as 27 kt. Mostly sunny. Seas 2 to 3 ft.
Friday Night
W wind 12 to 15 kt, with gusts as high as 21 kt. Mostly cloudy. Seas around 2 ft.
Saturday
W wind 13 to 18 kt, with gusts as high as 26 kt. Mostly cloudy. Seas 2 to 3 ft.
Saturday Night
W wind around 17 kt, with gusts as high as 23 kt. A chance of snow. Seas 2 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: 40.62°N 73.24°W
Last Update: 5:42 pm EST Dec 9, 2025
Forecast Valid: 6pm EST Dec 9, 2025-6pm EST Dec 16, 2025
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