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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Wednesday

      Wednesday:NNE wind 6 to 11 kt becoming S in the afternoon. Mostly sunny. Seas around 3 ft.

      NNE 11kt
      3ft

    • Wednesday Night

      Wednesday Night:SW wind 10 to 12 kt. Increasing clouds. Seas around 3 ft.

      SW 12kt
      3ft

    • Thursday

      Thursday:WSW wind 9 to 14 kt becoming SSW in the afternoon. A slight chance of showers and thunderstorms after 2pm. 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 11pm, then a chance of showers between 11pm and 2am. Seas 3 to 4 ft.

      SSW 16kt⇓
      3-4ft

    • Friday

      Friday:SW wind 8 to 10 kt. A slight chance of showers and thunderstorms after 2pm. Seas around 2 ft.

      SW 10kt
      2ft

    • Friday Night

      Friday Night:W wind 7 to 10 kt. Mostly cloudy. Seas 2 to 3 ft.

      W 10kt
      2-3ft

    • Saturday

      Saturday:N wind 6 to 8 kt becoming ESE in the afternoon. Mostly sunny. Seas around 2 ft.

      N 8kt
      2ft

    • Saturday Night

      Saturday Night:SSE wind 5 to 7 kt becoming ENE after midnight. Partly cloudy. Seas around 2 ft.

      SSE 7kt
      2ft

    • Sunday

      Sunday:NE wind 6 to 8 kt becoming SSE in the afternoon. Mostly sunny. Seas around 2 ft.

      SSE 8kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 8:34 pm EDT Jul 7, 2026
Forecast Valid: 2am EDT Jul 8, 2026-6pm EDT Jul 14, 2026

View Nearby Observations

Detailed Forecast


Wednesday
NNE wind 6 to 11 kt becoming S in the afternoon. Mostly sunny. Seas around 3 ft.
Wednesday Night
SW wind 10 to 12 kt. Increasing clouds. Seas around 3 ft.
Thursday
WSW wind 9 to 14 kt becoming SSW in the afternoon. A slight chance of showers and thunderstorms after 2pm. 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 11pm, then a chance of showers between 11pm and 2am. Seas 3 to 4 ft.
Friday
SW wind 8 to 10 kt. A slight chance of showers and thunderstorms after 2pm. Seas around 2 ft.
Friday Night
W wind 7 to 10 kt. Mostly cloudy. Seas 2 to 3 ft.
Saturday
N wind 6 to 8 kt becoming ESE in the afternoon. Mostly sunny. Seas around 2 ft.
Saturday Night
SSE wind 5 to 7 kt becoming ENE after midnight. Partly cloudy. Seas around 2 ft.
Sunday
NE wind 6 to 8 kt becoming SSE in the afternoon. Mostly sunny. 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: 8:34 pm EDT Jul 7, 2026
Forecast Valid: 2am EDT Jul 8, 2026-6pm EDT Jul 14, 2026
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