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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:SSE wind around 11 kt becoming ESE after midnight. Increasing clouds. Seas around 2 ft.

      SSE 11kt
      2ft

    • Saturday

      Saturday:ESE wind around 17 kt. Rain, mainly after 11am.   Seas 2 to 3 ft.

      ESE 17kt
      2-3ft

    • Saturday Night

      Saturday Night:E wind 15 to 17 kt. Rain.   Seas 3 to 4 ft.

      E 17kt
      3-4ft

    • Sunday

      Sunday:ENE wind around 19 kt. A chance of rain.   Seas around 4 ft.

      ENE 19kt
      4ft

    • Sunday Night

      Sunday Night:ENE wind 14 to 16 kt. A chance of rain, mainly before 2am.   Seas 4 to 5 ft.

      ENE 16kt
      4-5ft

    • Monday

      Monday:ENE wind 14 to 16 kt. Mostly sunny. Seas around 4 ft.

      ENE 16kt
      4ft

    • Monday Night

      Monday Night:NE wind 12 to 14 kt. Mostly clear. Seas around 4 ft.

      NE 14kt
      4ft

    • Tuesday

      Tuesday:NE wind around 12 kt becoming E in the afternoon. Mostly sunny. Seas around 4 ft.

      NE 12kt
      4ft

    • Tuesday Night

      Tuesday Night:E wind 8 to 11 kt. A chance of showers.   Seas 5 to 6 ft.

      E 11kt
      5-6ft


Associated Zone Forecast which includes this point

Last Update: 3:23 pm EDT Apr 24, 2026
Forecast Valid: 7pm EDT Apr 24, 2026-6pm EDT May 1, 2026

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Detailed Forecast


Tonight
SSE wind around 11 kt becoming ESE after midnight. Increasing clouds. Seas around 2 ft.
Saturday
ESE wind around 17 kt. Rain, mainly after 11am. Seas 2 to 3 ft.
Saturday Night
E wind 15 to 17 kt. Rain. Seas 3 to 4 ft.
Sunday
ENE wind around 19 kt. A chance of rain. Seas around 4 ft.
Sunday Night
ENE wind 14 to 16 kt. A chance of rain, mainly before 2am. Seas 4 to 5 ft.
Monday
ENE wind 14 to 16 kt. Mostly sunny. Seas around 4 ft.
Monday Night
NE wind 12 to 14 kt. Mostly clear. Seas around 4 ft.
Tuesday
NE wind around 12 kt becoming E in the afternoon. Mostly sunny. Seas around 4 ft.
Tuesday Night
E wind 8 to 11 kt. A chance of showers. Seas 5 to 6 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: 3:23 pm EDT Apr 24, 2026
Forecast Valid: 7pm EDT Apr 24, 2026-6pm EDT May 1, 2026
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