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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:NNE wind 5 to 10 kt becoming variable and less than 5 kt. Sunny. Seas around 3 ft.

      NNE 10kt⇓
      3ft

    • Tonight

      Tonight:SSW wind around 12 kt becoming WSW after midnight. Mostly clear. Seas 2 to 3 ft.

      SSW 12kt
      2-3ft

    • Thursday

      Thursday:SSW wind 9 to 12 kt increasing to 12 to 15 kt in the afternoon. Isolated showers and thunderstorms after 5pm. Seas around 3 ft.

      ⇑SSW 15kt
      3ft

    • Thursday Night

      Thursday Night:SSW wind 12 to 15 kt becoming WSW 9 to 12 kt after midnight. A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Seas 4 ft subsiding to 2 ft.

      SSW 15kt⇓
      4ftWaves Subsiding

    • Friday

      Friday:W wind 8 to 10 kt becoming SW in the afternoon. A chance of showers and thunderstorms after 2pm. Seas around 2 ft.

      WSW 10kt
      2ft

    • Friday Night

      Friday Night:WSW wind 7 to 10 kt becoming NNW after midnight. A chance of showers and thunderstorms before 8pm. Seas 2 to 3 ft.

      WSW 10kt
      2-3ft

    • Saturday

      Saturday:NNE wind 6 to 9 kt becoming ENE in the afternoon. Mostly sunny. Seas 2 to 3 ft.

      NNE 9kt
      2-3ft

    • Saturday Night

      Saturday Night:ESE wind around 6 kt becoming NE after midnight. Partly cloudy. Seas 2 to 3 ft.

      ESE 6kt
      2-3ft

    • Sunday

      Sunday:NNE wind 6 to 8 kt becoming SSE in the afternoon. Sunny. Seas around 2 ft.

      NNE 8kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 3:09 am EDT Jul 8, 2026
Forecast Valid: 6am EDT Jul 8, 2026-6pm EDT Jul 14, 2026

View Nearby Observations

Detailed Forecast


Today
NNE wind 5 to 10 kt becoming variable and less than 5 kt. Sunny. Seas around 3 ft.
Tonight
SSW wind around 12 kt becoming WSW after midnight. Mostly clear. Seas 2 to 3 ft.
Thursday
SSW wind 9 to 12 kt increasing to 12 to 15 kt in the afternoon. Isolated showers and thunderstorms after 5pm. Seas around 3 ft.
Thursday Night
SSW wind 12 to 15 kt becoming WSW 9 to 12 kt after midnight. A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Seas 4 ft subsiding to 2 ft.
Friday
W wind 8 to 10 kt becoming SW in the afternoon. A chance of showers and thunderstorms after 2pm. Seas around 2 ft.
Friday Night
WSW wind 7 to 10 kt becoming NNW after midnight. A chance of showers and thunderstorms before 8pm. Seas 2 to 3 ft.
Saturday
NNE wind 6 to 9 kt becoming ENE in the afternoon. Mostly sunny. Seas 2 to 3 ft.
Saturday Night
ESE wind around 6 kt becoming NE after midnight. Partly cloudy. Seas 2 to 3 ft.
Sunday
NNE wind 6 to 8 kt becoming SSE in the afternoon. 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: 3:09 am EDT Jul 8, 2026
Forecast Valid: 6am EDT Jul 8, 2026-6pm EDT Jul 14, 2026
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