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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:E wind 11 to 13 kt. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Seas around 2 ft.

      E 13kt
      2ft

    • Monday

      Monday:E wind around 19 kt. Showers and possibly a thunderstorm. Seas 3 to 4 ft.

      E 19kt
      3-4ft

    • Monday Night

      Monday Night:E wind 13 to 17 kt, with gusts as high as 24 kt. Showers and possibly a thunderstorm. Seas 3 to 4 ft.

      E 17kt
      3-4ft

    • Tuesday

      Tuesday:NE wind around 13 kt. Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Seas around 3 ft.

      NE 13kt
      3ft

    • Tuesday Night

      Tuesday Night:NE wind around 13 kt. A chance of showers and thunderstorms. Seas around 3 ft.

      NE 13kt
      3ft

    • Wednesday

      Wednesday:NNE wind 7 to 11 kt becoming E in the afternoon. Partly sunny. Seas 2 to 3 ft.

      NNE 11kt
      2-3ft

    • Wednesday Night

      Wednesday Night:S wind around 7 kt becoming SW after midnight. Partly cloudy. Seas around 2 ft.

      S 7kt
      2ft

    • Thursday

      Thursday:WSW wind 7 to 10 kt becoming S 10 to 13 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.

      ⇑S 13kt
      2-3ft

    • Thursday Night

      Thursday Night:SW wind 11 to 16 kt. Partly cloudy. Seas 3 to 4 ft.

      SW 16kt
      3-4ft


Associated Zone Forecast which includes this point

Last Update: 2:56 pm EDT Jul 5, 2026
Forecast Valid: 6pm EDT Jul 5, 2026-6pm EDT Jul 12, 2026

View Nearby Observations

Detailed Forecast


Tonight
E wind 11 to 13 kt. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Seas around 2 ft.
Monday
E wind around 19 kt. Showers and possibly a thunderstorm. Seas 3 to 4 ft.
Monday Night
E wind 13 to 17 kt, with gusts as high as 24 kt. Showers and possibly a thunderstorm. Seas 3 to 4 ft.
Tuesday
NE wind around 13 kt. Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Seas around 3 ft.
Tuesday Night
NE wind around 13 kt. A chance of showers and thunderstorms. Seas around 3 ft.
Wednesday
NNE wind 7 to 11 kt becoming E in the afternoon. Partly sunny. Seas 2 to 3 ft.
Wednesday Night
S wind around 7 kt becoming SW after midnight. Partly cloudy. Seas around 2 ft.
Thursday
WSW wind 7 to 10 kt becoming S 10 to 13 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.
Thursday Night
SW wind 11 to 16 kt. Partly cloudy. Seas 3 to 4 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: 2:56 pm EDT Jul 5, 2026
Forecast Valid: 6pm EDT Jul 5, 2026-6pm EDT Jul 12, 2026
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