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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Sunday

      Sunday:N wind 10 to 13 kt. A chance of rain and snow before 10am, then snow likely between 10am and 4pm. Seas 2 to 3 ft.

      N 13kt
      2-3ft

    • Sunday Night

      Sunday Night:N wind 11 to 15 kt, with gusts as high as 21 kt. Widespread freezing spray, mainly after 1am. Mostly clear. Seas 2 to 3 ft.

      N 15kt
      2-3ft

    • Monday

      Monday:N wind 8 to 13 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas around 2 ft.

      N 13kt⇓
      2ft

    • Monday Night

      Monday Night:SSE wind 5 to 10 kt. Mostly clear. Seas around 2 ft.

      SSE 10kt
      2ft

    • Tuesday

      Tuesday:SSE wind 9 to 11 kt. A chance of snow and sleet before 10am, then a chance of rain and snow between 10am and 1pm, then rain after 1pm. Seas 2 to 3 ft.

      SSE 11kt
      2-3ft

    • Tuesday Night

      Tuesday Night:S wind 12 to 14 kt becoming WSW after midnight. Winds could gust as high as 20 kt. Rain. Seas 3 to 4 ft.

      WSW 14kt
      3-4ft

    • Wednesday

      Wednesday:WSW wind 7 to 12 kt becoming SSE in the afternoon. A chance of rain before 1pm. Seas 3 to 4 ft.

      WSW 12kt
      3-4ft

    • Wednesday Night

      Wednesday Night:SSE wind 7 to 9 kt becoming S after midnight. A chance of rain. Seas 3 to 4 ft.

      S 9kt
      3-4ft

    • Thursday

      Thursday:S wind around 11 kt. A chance of rain. Seas around 4 ft.

      S 11kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 1:58 am EST Mar 1, 2026
Forecast Valid: 4am EST Mar 1, 2026-6pm EST Mar 7, 2026

View Nearby Observations

Detailed Forecast


Sunday
N wind 10 to 13 kt. A chance of rain and snow before 10am, then snow likely between 10am and 4pm. Seas 2 to 3 ft.
Sunday Night
N wind 11 to 15 kt, with gusts as high as 21 kt. Widespread freezing spray, mainly after 1am. Mostly clear. Seas 2 to 3 ft.
Monday
N wind 8 to 13 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas around 2 ft.
Monday Night
SSE wind 5 to 10 kt. Mostly clear. Seas around 2 ft.
Tuesday
SSE wind 9 to 11 kt. A chance of snow and sleet before 10am, then a chance of rain and snow between 10am and 1pm, then rain after 1pm. Seas 2 to 3 ft.
Tuesday Night
S wind 12 to 14 kt becoming WSW after midnight. Winds could gust as high as 20 kt. Rain. Seas 3 to 4 ft.
Wednesday
WSW wind 7 to 12 kt becoming SSE in the afternoon. A chance of rain before 1pm. Seas 3 to 4 ft.
Wednesday Night
SSE wind 7 to 9 kt becoming S after midnight. A chance of rain. Seas 3 to 4 ft.
Thursday
S wind around 11 kt. A chance of rain. 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: 1:58 am EST Mar 1, 2026
Forecast Valid: 4am EST Mar 1, 2026-6pm EST Mar 7, 2026
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