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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:NNW wind 12 to 14 kt. Mostly clear. Seas 2 to 3 ft.

      NNW 14kt
      2-3ft

    • Tuesday

      Tuesday:NW wind 8 to 12 kt becoming SSW in the afternoon. Sunny. Seas around 2 ft.

      SSW 12kt
      2ft

    • Tuesday Night

      Tuesday Night:SSW wind 13 to 16 kt decreasing to 8 to 11 kt after midnight. Winds could gust as high as 22 kt. Partly cloudy. Seas 2 to 3 ft.

      SSW 16kt⇓
      2-3ft

    • Wednesday

      Wednesday:SSE wind 6 to 10 kt. A slight chance of showers. Seas around 2 ft.

      SSE 10kt
      2ft

    • Wednesday Night

      Wednesday Night:S wind around 9 kt. Mostly cloudy. Seas 2 to 3 ft.

      S 9kt
      2-3ft

    • Thursday

      Thursday:S wind 16 to 19 kt increasing to 21 to 24 kt in the morning. Winds could gust as high as 31 kt. A chance of showers after 2pm. Seas 4 ft building to 6 ft.

      ⇑S 24kt
      Waves Building6ft

    • Thursday Night

      Thursday Night:WSW wind 19 to 22 kt decreasing to 14 to 17 kt after midnight. Winds could gust as high as 28 kt. A chance of showers before 8pm. Seas 7 ft subsiding to 4 ft.

      WSW 22kt⇓
      7ftWaves Subsiding

    • Juneteenth

      Juneteenth:WSW wind 11 to 14 kt. A chance of showers. Seas 3 to 4 ft.

      WSW 14kt
      3-4ft

    • Friday Night

      Friday Night:W wind 11 to 14 kt. Partly cloudy. Seas around 3 ft.

      W 14kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 7:54 pm EDT Jun 15, 2026
Forecast Valid: 9pm EDT Jun 15, 2026-6pm EDT Jun 22, 2026

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Detailed Forecast


Tonight
NNW wind 12 to 14 kt. Mostly clear. Seas 2 to 3 ft.
Tuesday
NW wind 8 to 12 kt becoming SSW in the afternoon. Sunny. Seas around 2 ft.
Tuesday Night
SSW wind 13 to 16 kt decreasing to 8 to 11 kt after midnight. Winds could gust as high as 22 kt. Partly cloudy. Seas 2 to 3 ft.
Wednesday
SSE wind 6 to 10 kt. A slight chance of showers. Seas around 2 ft.
Wednesday Night
S wind around 9 kt. Mostly cloudy. Seas 2 to 3 ft.
Thursday
S wind 16 to 19 kt increasing to 21 to 24 kt in the morning. Winds could gust as high as 31 kt. A chance of showers after 2pm. Seas 4 ft building to 6 ft.
Thursday Night
WSW wind 19 to 22 kt decreasing to 14 to 17 kt after midnight. Winds could gust as high as 28 kt. A chance of showers before 8pm. Seas 7 ft subsiding to 4 ft.
Juneteenth
WSW wind 11 to 14 kt. A chance of showers. Seas 3 to 4 ft.
Friday Night
W wind 11 to 14 kt. Partly cloudy. Seas around 3 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: 7:54 pm EDT Jun 15, 2026
Forecast Valid: 9pm EDT Jun 15, 2026-6pm EDT Jun 22, 2026
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