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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NE wind 5 to 8 kt. Mostly cloudy. Seas 1 ft or less.

      NE 8kt
      < 1ft

    • Saturday

      Saturday:NE wind around 6 kt becoming variable and less than 5 kt in the afternoon. A slight chance of showers after 2pm.   Seas 1 ft or less.

      NE 6kt⇓
      < 1ft

    • Saturday Night

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

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. A chance of showers and thunderstorms.   Seas 1 ft or less.

      ⇑SSW 6kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind 6 to 8 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.

      SW 8kt
      < 1ft

    • Monday

      Monday:W wind 6 to 8 kt. Sunny. Seas 1 ft or less.

      W 8kt
      < 1ft

    • Monday Night

      Monday Night:W wind around 7 kt. Mostly clear. Seas 1 ft or less.

      W 7kt
      < 1ft

    • Tuesday

      Tuesday:W wind around 8 kt. Sunny. Seas 1 ft or less.

      W 8kt
      < 1ft

    • Tuesday Night

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

      Light Wind
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:49 pm EDT Aug 21, 2026
Forecast Valid: 6pm EDT Aug 21, 2026-6pm EDT Aug 28, 2026

View Nearby Observations

Detailed Forecast


Tonight
NE wind 5 to 8 kt. Mostly cloudy. Seas 1 ft or less.
Saturday
NE wind around 6 kt becoming variable and less than 5 kt in the afternoon. A slight chance of showers after 2pm. Seas 1 ft or less.
Saturday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. A chance of showers and thunderstorms. Seas 1 ft or less.
Sunday Night
SW wind 6 to 8 kt becoming W after midnight. Partly cloudy. Seas 1 ft or less.
Monday
W wind 6 to 8 kt. Sunny. Seas 1 ft or less.
Monday Night
W wind around 7 kt. Mostly clear. Seas 1 ft or less.
Tuesday
W wind around 8 kt. Sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly clear. 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: 2:49 pm EDT Aug 21, 2026
Forecast Valid: 6pm EDT Aug 21, 2026-6pm EDT Aug 28, 2026
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