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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:E wind around 18 kt, with gusts as high as 24 kt. Periods of showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Seas around 4 ft.

      E 18kt
      4ft

    • Tonight

      Tonight:ENE wind 14 to 18 kt, with gusts as high as 24 kt. Showers and possibly a thunderstorm. Seas around 4 ft.

      ENE 18kt
      4ft

    • Tuesday

      Tuesday:NNE wind around 15 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas around 3 ft.

      NNE 15kt
      3ft

    • Tuesday Night

      Tuesday Night:NNE wind 12 to 15 kt. A chance of showers, mainly before 8pm. Seas around 3 ft.

      NNE 15kt
      3ft

    • Wednesday

      Wednesday:NNE wind 7 to 11 kt becoming SSE in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas around 3 ft.

      NNE 11kt
      3ft

    • Wednesday Night

      Wednesday Night:SW wind 7 to 9 kt. Mostly clear. Seas 2 to 3 ft.

      SW 9kt
      2-3ft

    • Thursday

      Thursday:WSW wind 8 to 11 kt becoming SSW 11 to 14 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.

      ⇑SSW 14kt
      2-3ft

    • Thursday Night

      Thursday Night:SW wind 15 to 18 kt decreasing to 12 to 15 kt after midnight. A chance of showers. Seas 3 to 4 ft.

      SW 18kt⇓
      3-4ft

    • Friday

      Friday:SW wind 8 to 11 kt. Partly sunny. Seas around 3 ft.

      SW 11kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 6:43 am EDT Jul 6, 2026
Forecast Valid: 11am EDT Jul 6, 2026-6pm EDT Jul 12, 2026

View Nearby Observations

Detailed Forecast


Today
E wind around 18 kt, with gusts as high as 24 kt. Periods of showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Seas around 4 ft.
Tonight
ENE wind 14 to 18 kt, with gusts as high as 24 kt. Showers and possibly a thunderstorm. Seas around 4 ft.
Tuesday
NNE wind around 15 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas around 3 ft.
Tuesday Night
NNE wind 12 to 15 kt. A chance of showers, mainly before 8pm. Seas around 3 ft.
Wednesday
NNE wind 7 to 11 kt becoming SSE in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas around 3 ft.
Wednesday Night
SW wind 7 to 9 kt. Mostly clear. Seas 2 to 3 ft.
Thursday
WSW wind 8 to 11 kt becoming SSW 11 to 14 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.
Thursday Night
SW wind 15 to 18 kt decreasing to 12 to 15 kt after midnight. A chance of showers. Seas 3 to 4 ft.
Friday
SW wind 8 to 11 kt. Partly sunny. 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: 6:43 am EDT Jul 6, 2026
Forecast Valid: 11am EDT Jul 6, 2026-6pm EDT Jul 12, 2026
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