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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:SSE wind 8 to 11 kt becoming S 13 to 16 kt after midnight. A slight chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers and possibly a thunderstorm after 2am. Seas 1 to 2 ft.

      ⇑S 16kt
      1-2ft

    • Monday

      Monday:SSW wind 12 to 16 kt. Showers and possibly a thunderstorm. Seas 1 to 2 ft.

      SSW 16kt
      1-2ft

    • Monday Night

      Monday Night:SW wind 7 to 9 kt becoming NNW after midnight. A chance of showers before 11pm. Seas around 1 ft.

      SW 9kt
      1ft

    • Tuesday

      Tuesday:NNW wind around 6 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      NNW 6kt⇓
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. A chance of showers after 2pm. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday Night

      Wednesday Night:SSW wind around 6 kt. A chance of showers before 8pm. Seas around 1 ft.

      SSW 6kt
      1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming SSW 5 to 9 kt in the morning. A chance of showers. Seas 1 ft or less.

      ⇑SSW 9kt
      < 1ft

    • Thursday Night

      Thursday Night:SSW wind 6 to 8 kt. A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Seas around 1 ft.

      SSW 8kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 2:30 pm EDT Aug 2, 2026
Forecast Valid: 6pm EDT Aug 2, 2026-6pm EDT Aug 9, 2026

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Detailed Forecast


Tonight
SSE wind 8 to 11 kt becoming S 13 to 16 kt after midnight. A slight chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers and possibly a thunderstorm after 2am. Seas 1 to 2 ft.
Monday
SSW wind 12 to 16 kt. Showers and possibly a thunderstorm. Seas 1 to 2 ft.
Monday Night
SW wind 7 to 9 kt becoming NNW after midnight. A chance of showers before 11pm. Seas around 1 ft.
Tuesday
NNW wind around 6 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
Wednesday
Variable winds 5 kt or less. A chance of showers after 2pm. Seas 1 ft or less.
Wednesday Night
SSW wind around 6 kt. A chance of showers before 8pm. Seas around 1 ft.
Thursday
Variable winds less than 5 kt becoming SSW 5 to 9 kt in the morning. A chance of showers. Seas 1 ft or less.
Thursday Night
SSW wind 6 to 8 kt. A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Seas around 1 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: 40.91°N 73.39°W
Last Update: 2:30 pm EDT Aug 2, 2026
Forecast Valid: 6pm EDT Aug 2, 2026-6pm EDT Aug 9, 2026
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