National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

5NM SSE Islip NY

Marine Point Forecast

[NOTICE]

    • 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 around 2 ft.

      ⇑SSW 28kt
      2ft

    • Wednesday Night

      Wednesday Night:WSW wind 23 to 27 kt becoming W after midnight. Winds could gust as high as 34 kt. A chance of rain before 1am. Seas around 2 ft.

      WSW 27kt
      2ft

    • Thursday

      Thursday:W wind around 25 kt, with gusts as high as 34 kt. Mostly sunny. Seas around 2 ft.

      W 25kt
      2ft

    • Thursday Night

      Thursday Night:W wind 26 to 29 kt decreasing to 22 to 25 kt after midnight. Winds could gust as high as 35 kt. Partly cloudy. Seas around 2 ft.

      W 29kt⇓
      2ft

    • Friday

      Friday:W wind 18 to 21 kt, with gusts as high as 28 kt. Mostly sunny. Seas around 2 ft.

      W 21kt
      2ft

    • Friday Night

      Friday Night:W wind 12 to 16 kt, with gusts as high as 22 kt. Mostly cloudy. Seas 1 to 2 ft.

      W 16kt
      1-2ft

    • Saturday

      Saturday:W wind 13 to 16 kt increasing to 18 to 21 kt in the afternoon. Winds could gust as high as 28 kt. Mostly cloudy. Seas 1 to 2 ft.

      ⇑W 21kt
      1-2ft

    • Saturday Night

      Saturday Night:W wind 17 to 20 kt, with gusts as high as 27 kt. A chance of snow. Seas around 2 ft.

      W 20kt
      2ft

    • Sunday

      Sunday:WNW wind 18 to 21 kt increasing to 22 to 25 kt in the afternoon. Winds could gust as high as 32 kt. A chance of rain and snow before 9am, then a chance of rain between 9am and 1pm. Seas around 2 ft.

      ⇑WNW 25kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 5:42 pm EST Dec 9, 2025
Forecast Valid: 1am EST Dec 10, 2025-6pm EST Dec 16, 2025

View Nearby Observations

Detailed Forecast

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

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 around 2 ft.
Wednesday Night
WSW wind 23 to 27 kt becoming W after midnight. Winds could gust as high as 34 kt. A chance of rain before 1am. Seas around 2 ft.
Thursday
W wind around 25 kt, with gusts as high as 34 kt. Mostly sunny. Seas around 2 ft.
Thursday Night
W wind 26 to 29 kt decreasing to 22 to 25 kt after midnight. Winds could gust as high as 35 kt. Partly cloudy. Seas around 2 ft.
Friday
W wind 18 to 21 kt, with gusts as high as 28 kt. Mostly sunny. Seas around 2 ft.
Friday Night
W wind 12 to 16 kt, with gusts as high as 22 kt. Mostly cloudy. Seas 1 to 2 ft.
Saturday
W wind 13 to 16 kt increasing to 18 to 21 kt in the afternoon. Winds could gust as high as 28 kt. Mostly cloudy. Seas 1 to 2 ft.
Saturday Night
W wind 17 to 20 kt, with gusts as high as 27 kt. A chance of snow. Seas around 2 ft.
Sunday
WNW wind 18 to 21 kt increasing to 22 to 25 kt in the afternoon. Winds could gust as high as 32 kt. A chance of rain and snow before 9am, then a chance of rain between 9am and 1pm. Seas around 2 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 40.66°N 73.17°W
Last Update: 5:42 pm EST Dec 9, 2025
Forecast Valid: 1am EST Dec 10, 2025-6pm EST Dec 16, 2025
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data