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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:Variable winds less than 5 kt becoming SSW 7 to 12 kt in the afternoon. Increasing clouds. Seas around 2 ft.

      ⇑SSW 12kt
      2ft

    • Tonight

      Tonight:SW wind 23 to 27 kt. Mostly cloudy. Seas 2 ft building to 6 ft.

      SW 27kt
      Waves Building6ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:SSW wind 25 to 28 kt increasing to 29 to 32 kt in the morning. Winds could gust as high as 40 kt. Rain likely, mainly after 1pm. Seas 6 ft building to 9 ft.

      ⇑SSW 32kt
      Waves Building9ft

    • Wednesday Night

      Wednesday Night:SW wind 26 to 29 kt becoming W after midnight. A chance of rain before 1am. Seas 7 to 8 ft.

      SW 29kt
      7-8ft

    • Thursday

      Thursday:WNW wind 23 to 26 kt. Mostly sunny. Seas 5 to 6 ft.

      WNW 26kt
      5-6ft

    • Thursday Night

      Thursday Night:W wind around 26 kt. Partly cloudy. Seas around 5 ft.

      W 26kt
      5ft

    • Friday

      Friday:W wind 19 to 23 kt. Mostly sunny. Seas 3 to 4 ft.

      W 23kt
      3-4ft

    • Friday Night

      Friday Night:WSW wind 16 to 18 kt. A chance of rain and snow. Seas around 3 ft.

      WSW 18kt
      3ft

    • Saturday

      Saturday:WSW wind 20 to 23 kt increasing to 23 to 26 kt in the afternoon. Partly sunny. Seas 3 ft building to 5 ft.

      ⇑WSW 26kt
      Waves Building5ft


Associated Zone Forecast which includes this point

Last Update: 4:50 am EST Dec 9, 2025
Forecast Valid: 5am EST Dec 9, 2025-6pm EST Dec 15, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE

Today
Variable winds less than 5 kt becoming SSW 7 to 12 kt in the afternoon. Increasing clouds. Seas around 2 ft.
Tonight
SW wind 23 to 27 kt. Mostly cloudy. Seas 2 ft building to 6 ft.
Wednesday
SSW wind 25 to 28 kt increasing to 29 to 32 kt in the morning. Winds could gust as high as 40 kt. Rain likely, mainly after 1pm. Seas 6 ft building to 9 ft.
Wednesday Night
SW wind 26 to 29 kt becoming W after midnight. A chance of rain before 1am. Seas 7 to 8 ft.
Thursday
WNW wind 23 to 26 kt. Mostly sunny. Seas 5 to 6 ft.
Thursday Night
W wind around 26 kt. Partly cloudy. Seas around 5 ft.
Friday
W wind 19 to 23 kt. Mostly sunny. Seas 3 to 4 ft.
Friday Night
WSW wind 16 to 18 kt. A chance of rain and snow. Seas around 3 ft.
Saturday
WSW wind 20 to 23 kt increasing to 23 to 26 kt in the afternoon. Partly sunny. Seas 3 ft building to 5 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: 4:50 am EST Dec 9, 2025
Forecast Valid: 5am EST Dec 9, 2025-6pm EST Dec 15, 2025
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