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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:SSW wind 13 to 16 kt. A chance of rain, mainly after 5am.   Seas around 4 ft.

      SSW 16kt
      4ft

    • Saturday

      Saturday:SSW wind 7 to 9 kt becoming WSW in the morning. A chance of rain, mainly before 8am.   Seas 2 to 3 ft.

      SSW 9kt
      2-3ft

    • Saturday Night

      Saturday Night:S wind 6 to 9 kt becoming N 12 to 15 kt in the evening. A chance of rain.   Seas around 2 ft.

      ⇑N 15kt
      2ft

    • Sunday

      Sunday:NW wind 15 to 17 kt becoming W in the afternoon. Sunny. Seas 3 to 4 ft.

      NW 17kt
      3-4ft

    • Sunday Night

      Sunday Night:WNW wind 9 to 12 kt becoming SW after midnight. Mostly clear. Seas around 3 ft.

      WNW 12kt
      3ft

    • Monday

      Monday:S wind 15 to 18 kt increasing to 19 to 22 kt in the afternoon. Sunny. Seas 4 to 5 ft.

      ⇑S 22kt
      4-5ft

    • Monday Night

      Monday Night:SSW wind around 21 kt. Partly cloudy. Seas 5 to 6 ft.

      SSW 21kt
      5-6ft

    • Tuesday

      Tuesday:SSW wind 18 to 21 kt increasing to 21 to 24 kt in the afternoon. Winds could gust as high as 30 kt. Mostly sunny. Seas 5 ft building to 7 ft.

      ⇑SSW 24kt
      Waves Building7ft

    • Tuesday Night

      Tuesday Night:SSW wind around 27 kt, with gusts as high as 33 kt. Mostly cloudy. Seas 8 to 9 ft.

      SSW 27kt
      8-9ft


Associated Zone Forecast which includes this point

Last Update: 2:21 pm EDT May 1, 2026
Forecast Valid: 4pm EDT May 1, 2026-6pm EDT May 8, 2026

View Nearby Observations

Detailed Forecast


Tonight
SSW wind 13 to 16 kt. A chance of rain, mainly after 5am. Seas around 4 ft.
Saturday
SSW wind 7 to 9 kt becoming WSW in the morning. A chance of rain, mainly before 8am. Seas 2 to 3 ft.
Saturday Night
S wind 6 to 9 kt becoming N 12 to 15 kt in the evening. A chance of rain. Seas around 2 ft.
Sunday
NW wind 15 to 17 kt becoming W in the afternoon. Sunny. Seas 3 to 4 ft.
Sunday Night
WNW wind 9 to 12 kt becoming SW after midnight. Mostly clear. Seas around 3 ft.
Monday
S wind 15 to 18 kt increasing to 19 to 22 kt in the afternoon. Sunny. Seas 4 to 5 ft.
Monday Night
SSW wind around 21 kt. Partly cloudy. Seas 5 to 6 ft.
Tuesday
SSW wind 18 to 21 kt increasing to 21 to 24 kt in the afternoon. Winds could gust as high as 30 kt. Mostly sunny. Seas 5 ft building to 7 ft.
Tuesday Night
SSW wind around 27 kt, with gusts as high as 33 kt. Mostly cloudy. Seas 8 to 9 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: 2:21 pm EDT May 1, 2026
Forecast Valid: 4pm EDT May 1, 2026-6pm EDT May 8, 2026
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