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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Friday

      Friday:W wind around 6 kt becoming WNW in the morning. A chance of showers and thunderstorms after 2pm.   Seas around 1 ft.

      W 6kt
      1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms.   Seas 1 ft or less.

      Light Wind
      < 1ft

    • Saturday

      Saturday:NNE wind 5 to 7 kt becoming ENE in the afternoon. A slight chance of showers.   Seas 1 ft or less.

      NNE 7kt
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Sunday

      Sunday:NNE wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.

      NNE 7kt⇓
      < 1ft

    • Sunday Night

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

      Light Wind
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming SSE 5 to 7 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SSE 7kt
      < 1ft

    • Monday Night

      Monday Night:S wind 6 to 9 kt becoming SW after midnight. Mostly clear. Seas around 1 ft.

      S 9kt
      1ft

    • Tuesday

      Tuesday:WSW wind 6 to 9 kt. Sunny. Seas around 1 ft.

      WSW 9kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 3:03 pm EDT Jul 9, 2026
Forecast Valid: 1am EDT Jul 10, 2026-6pm EDT Jul 16, 2026

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Detailed Forecast


Friday
W wind around 6 kt becoming WNW in the morning. A chance of showers and thunderstorms after 2pm. Seas around 1 ft.
Friday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.
Saturday
NNE wind 5 to 7 kt becoming ENE in the afternoon. A slight chance of showers. Seas 1 ft or less.
Saturday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Sunday
NNE wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming SSE 5 to 7 kt in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
S wind 6 to 9 kt becoming SW after midnight. Mostly clear. Seas around 1 ft.
Tuesday
WSW wind 6 to 9 kt. Sunny. 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: 3:03 pm EDT Jul 9, 2026
Forecast Valid: 1am EDT Jul 10, 2026-6pm EDT Jul 16, 2026
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