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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:S wind 8 to 10 kt becoming SW after midnight. Mostly clear. Seas around 2 ft.

      S 10kt
      2ft

    • Tuesday

      Tuesday:WSW wind 9 to 12 kt becoming S 12 to 15 kt in the afternoon. Sunny. Seas around 2 ft.

      ⇑S 15kt
      2ft

    • Tuesday Night

      Tuesday Night:SSW wind 14 to 19 kt. Increasing clouds. Seas 3 to 4 ft.

      SSW 19kt
      3-4ft

    • Wednesday

      Wednesday:S wind 12 to 15 kt increasing to 15 to 18 kt in the afternoon. Showers likely, mainly after 2pm. Seas 2 ft building to 4 ft.

      ⇑S 18kt
      Waves Building4ft

    • Wednesday Night

      Wednesday Night:SW wind 16 to 19 kt decreasing to 12 to 15 kt after midnight. Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Seas around 4 ft.

      SW 19kt⇓
      4ft

    • Thursday

      Thursday:SW wind 10 to 13 kt. A chance of showers and thunderstorms after 2pm. Seas 3 to 4 ft.

      SW 13kt
      3-4ft

    • Thursday Night

      Thursday Night:WSW wind 8 to 10 kt. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas around 3 ft.

      WSW 10kt
      3ft

    • Friday

      Friday:SW wind 6 to 11 kt becoming SSE in the afternoon. Partly sunny. Seas around 2 ft.

      SSE 11kt
      2ft

    • Friday Night

      Friday Night:SSE wind 7 to 10 kt. A chance of showers and thunderstorms between 8pm and 2am. Seas around 2 ft.

      SSE 10kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 2:07 pm EDT Jun 8, 2026
Forecast Valid: 9pm EDT Jun 8, 2026-6pm EDT Jun 15, 2026

View Nearby Observations

Detailed Forecast


Tonight
S wind 8 to 10 kt becoming SW after midnight. Mostly clear. Seas around 2 ft.
Tuesday
WSW wind 9 to 12 kt becoming S 12 to 15 kt in the afternoon. Sunny. Seas around 2 ft.
Tuesday Night
SSW wind 14 to 19 kt. Increasing clouds. Seas 3 to 4 ft.
Wednesday
S wind 12 to 15 kt increasing to 15 to 18 kt in the afternoon. Showers likely, mainly after 2pm. Seas 2 ft building to 4 ft.
Wednesday Night
SW wind 16 to 19 kt decreasing to 12 to 15 kt after midnight. Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Seas around 4 ft.
Thursday
SW wind 10 to 13 kt. A chance of showers and thunderstorms after 2pm. Seas 3 to 4 ft.
Thursday Night
WSW wind 8 to 10 kt. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas around 3 ft.
Friday
SW wind 6 to 11 kt becoming SSE in the afternoon. Partly sunny. Seas around 2 ft.
Friday Night
SSE wind 7 to 10 kt. A chance of showers and thunderstorms between 8pm and 2am. Seas around 2 ft.

Winds and seas may be higher in and near tstms.

*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: 2:07 pm EDT Jun 8, 2026
Forecast Valid: 9pm EDT Jun 8, 2026-6pm EDT Jun 15, 2026
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