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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:WNW wind 17 to 19 kt. Mostly sunny. Seas around 3 ft.

      WNW 19kt
      3ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:SSW wind 7 to 10 kt becoming S 14 to 19 kt. Snow likely after 4am.   Seas 2 to 3 ft.

      ⇑S 19kt
      2-3ft

    • Wednesday

      Wednesday:SW wind 20 to 23 kt decreasing to 17 to 20 kt in the afternoon. Winds could gust as high as 29 kt. Rain and snow, mainly before 10am.   Seas 5 to 6 ft.

      SW 23kt⇓
      5-6ft

    • Wednesday Night

      Wednesday Night:SW wind 13 to 15 kt becoming W after midnight. Partly cloudy. Seas 4 to 5 ft.

      SW 15kt
      4-5ft

    • Thursday

      Thursday:WNW wind 7 to 11 kt. A chance of snow, mainly after 4pm.   Seas 3 to 4 ft.

      WNW 11kt
      3-4ft

    • Thursday Night

      Thursday Night:W wind 6 to 10 kt becoming NNE after midnight. A chance of snow.   Seas 2 to 3 ft.

      NNE 10kt
      2-3ft

    • Friday

      Friday:NNE wind 6 to 11 kt becoming NNW in the afternoon. Mostly sunny. Seas 2 to 3 ft.

      NNE 11kt
      2-3ft

    • Friday Night

      Friday Night:Variable winds less than 5 kt becoming SW around 6 kt in the evening. Partly cloudy. Seas around 2 ft.

      ⇑SW 6kt
      2ft

    • Saturday

      Saturday:SSW wind 6 to 8 kt. Mostly sunny. Seas around 2 ft.

      SSW 8kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 1:21 pm EST Feb 24, 2026
Forecast Valid: 2pm EST Feb 24, 2026-6pm EST Mar 2, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING...

This Afternoon
WNW wind 17 to 19 kt. Mostly sunny. Seas around 3 ft.
Tonight
SSW wind 7 to 10 kt becoming S 14 to 19 kt. Snow likely after 4am. Seas 2 to 3 ft.
Wednesday
SW wind 20 to 23 kt decreasing to 17 to 20 kt in the afternoon. Winds could gust as high as 29 kt. Rain and snow, mainly before 10am. Seas 5 to 6 ft.
Wednesday Night
SW wind 13 to 15 kt becoming W after midnight. Partly cloudy. Seas 4 to 5 ft.
Thursday
WNW wind 7 to 11 kt. A chance of snow, mainly after 4pm. Seas 3 to 4 ft.
Thursday Night
W wind 6 to 10 kt becoming NNE after midnight. A chance of snow. Seas 2 to 3 ft.
Friday
NNE wind 6 to 11 kt becoming NNW in the afternoon. Mostly sunny. Seas 2 to 3 ft.
Friday Night
Variable winds less than 5 kt becoming SW around 6 kt in the evening. Partly cloudy. Seas around 2 ft.
Saturday
SSW wind 6 to 8 kt. Mostly sunny. 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.
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ABOUT THIS FORECAST

Point Forecast: 40.53°N 73.44°W
Last Update: 1:21 pm EST Feb 24, 2026
Forecast Valid: 2pm EST Feb 24, 2026-6pm EST Mar 2, 2026
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