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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:E wind 12 to 17 kt, with gusts as high as 24 kt. Showers and possibly a thunderstorm before 2am, then a chance of showers.   Seas 3 to 4 ft.

      E 17kt
      3-4ft

    • Tuesday

      Tuesday:NNE wind 12 to 14 kt, with gusts as high as 20 kt. A chance of showers before 11am.   Seas around 3 ft.

      NNE 14kt
      3ft

    • Tuesday Night

      Tuesday Night:NNE wind around 13 kt. A slight chance of showers after 5am.   Seas around 3 ft.

      NNE 13kt
      3ft

    • Wednesday

      Wednesday:N wind 7 to 10 kt becoming SE in the afternoon. A slight chance of showers before 8am.   Seas around 3 ft.

      N 10kt
      3ft

    • Wednesday Night

      Wednesday Night:S wind around 9 kt becoming SW after midnight. Mostly clear. Seas around 3 ft.

      SW 9kt
      3ft

    • Thursday

      Thursday:WSW wind 7 to 10 kt becoming SSW 11 to 14 kt in the afternoon. Mostly sunny. Seas around 3 ft.

      ⇑SSW 14kt
      3ft

    • Thursday Night

      Thursday Night:SSW wind 13 to 16 kt becoming WSW 10 to 13 kt after midnight. A chance of showers and thunderstorms before 2am.   Seas 3 to 4 ft.

      SSW 16kt⇓
      3-4ft

    • Friday

      Friday:W wind 9 to 11 kt becoming SW in the afternoon. A chance of showers and thunderstorms after 2pm.   Seas around 2 ft.

      SW 11kt
      2ft

    • Friday Night

      Friday Night:W wind 8 to 10 kt. A chance of showers and thunderstorms before 8pm.   Seas around 3 ft.

      W 10kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 2:35 pm EDT Jul 6, 2026
Forecast Valid: 7pm EDT Jul 6, 2026-6pm EDT Jul 13, 2026

View Nearby Observations

Detailed Forecast


Tonight
E wind 12 to 17 kt, with gusts as high as 24 kt. Showers and possibly a thunderstorm before 2am, then a chance of showers. Seas 3 to 4 ft.
Tuesday
NNE wind 12 to 14 kt, with gusts as high as 20 kt. A chance of showers before 11am. Seas around 3 ft.
Tuesday Night
NNE wind around 13 kt. A slight chance of showers after 5am. Seas around 3 ft.
Wednesday
N wind 7 to 10 kt becoming SE in the afternoon. A slight chance of showers before 8am. Seas around 3 ft.
Wednesday Night
S wind around 9 kt becoming SW after midnight. Mostly clear. Seas around 3 ft.
Thursday
WSW wind 7 to 10 kt becoming SSW 11 to 14 kt in the afternoon. Mostly sunny. Seas around 3 ft.
Thursday Night
SSW wind 13 to 16 kt becoming WSW 10 to 13 kt after midnight. A chance of showers and thunderstorms before 2am. Seas 3 to 4 ft.
Friday
W wind 9 to 11 kt becoming SW in the afternoon. A chance of showers and thunderstorms after 2pm. Seas around 2 ft.
Friday Night
W wind 8 to 10 kt. A chance of showers and thunderstorms before 8pm. Seas around 3 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: 2:35 pm EDT Jul 6, 2026
Forecast Valid: 7pm EDT Jul 6, 2026-6pm EDT Jul 13, 2026
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