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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:SSW wind around 6 kt. A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 5am, then a chance of showers and thunderstorms after 5am.   Seas 1 ft or less.

      SSW 6kt
      < 1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. A chance of showers and thunderstorms before 10am, then a slight chance of showers after 5pm.   Seas 1 ft or less.

      Light Wind
      < 1ft

    • Thursday Night

      Thursday Night:NW wind around 6 kt becoming W in the evening. A slight chance of showers before 8pm.   Seas 1 ft or less.

      NW 6kt
      < 1ft

    • Friday

      Friday:N wind 6 to 9 kt becoming WNW in the afternoon. Sunny. Seas 1 ft or less.

      WNW 9kt
      < 1ft

    • Friday Night

      Friday Night:Variable winds less than 5 kt becoming NNE 5 to 7 kt after midnight. Partly cloudy. Seas 1 ft or less.

      ⇑NNE 7kt
      < 1ft

    • Saturday

      Saturday:NNE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.

      NNE 8kt⇓
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. A chance of showers.   Seas 1 ft or less.

      ⇑S 10kt
      < 1ft

    • Sunday Night

      Sunday Night:SSW wind around 12 kt. Showers likely.   Seas 1 ft or less.

      SSW 12kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 9:00 pm EDT Aug 12, 2026
Forecast Valid: 10pm EDT Aug 12, 2026-6pm EDT Aug 19, 2026

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Detailed Forecast


Tonight
SSW wind around 6 kt. A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 5am, then a chance of showers and thunderstorms after 5am. Seas 1 ft or less.
Thursday
Variable winds 5 kt or less. A chance of showers and thunderstorms before 10am, then a slight chance of showers after 5pm. Seas 1 ft or less.
Thursday Night
NW wind around 6 kt becoming W in the evening. A slight chance of showers before 8pm. Seas 1 ft or less.
Friday
N wind 6 to 9 kt becoming WNW in the afternoon. Sunny. Seas 1 ft or less.
Friday Night
Variable winds less than 5 kt becoming NNE 5 to 7 kt after midnight. Partly cloudy. Seas 1 ft or less.
Saturday
NNE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.
Saturday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. A chance of showers. Seas 1 ft or less.
Sunday Night
SSW wind around 12 kt. Showers likely. Seas 1 ft or less.

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: 9:00 pm EDT Aug 12, 2026
Forecast Valid: 10pm EDT Aug 12, 2026-6pm EDT Aug 19, 2026
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