National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:NW wind 5 to 10 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

      NW 10kt⇓
      < 1ft

    • Friday

      Friday:W wind 7 to 12 kt. Mostly sunny. Seas 1 ft or less.

      W 12kt
      < 1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. A slight chance of showers after 2am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Saturday

      Saturday:S wind 5 to 8 kt increasing to 11 to 14 kt in the afternoon. Showers, with thunderstorms also possible after 5pm. Seas 1 ft or less.

      ⇑S 14kt
      < 1ft

    • Saturday Night

      Saturday Night:S wind 8 to 11 kt decreasing to 5 to 8 kt after midnight. Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Seas 1 ft or less.

      S 11kt⇓
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming SSW 5 to 9 kt in the morning. Mostly sunny. Seas 1 ft or less.

      ⇑SSW 9kt
      < 1ft

    • Sunday Night

      Sunday Night:WSW wind around 6 kt becoming variable and less than 5 kt. Showers likely, mainly after 2am. Seas 1 ft or less.

      WSW 6kt⇓
      < 1ft

    • Monday

      Monday:N wind around 9 kt. Showers likely. Seas 1 ft or less.

      N 9kt
      < 1ft

    • Monday Night

      Monday Night:NNW wind 7 to 10 kt. A chance of showers. Seas around 1 ft.

      NNW 10kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 1:42 pm EDT May 7, 2026
Forecast Valid: 4pm EDT May 7, 2026-6pm EDT May 14, 2026

View Nearby Observations

Detailed Forecast


Tonight
NW wind 5 to 10 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.
Friday
W wind 7 to 12 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
Variable winds 5 kt or less. A slight chance of showers after 2am. Seas 1 ft or less.
Saturday
S wind 5 to 8 kt increasing to 11 to 14 kt in the afternoon. Showers, with thunderstorms also possible after 5pm. Seas 1 ft or less.
Saturday Night
S wind 8 to 11 kt decreasing to 5 to 8 kt after midnight. Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming SSW 5 to 9 kt in the morning. Mostly sunny. Seas 1 ft or less.
Sunday Night
WSW wind around 6 kt becoming variable and less than 5 kt. Showers likely, mainly after 2am. Seas 1 ft or less.
Monday
N wind around 9 kt. Showers likely. Seas 1 ft or less.
Monday Night
NNW wind 7 to 10 kt. A chance of showers. 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: 1:42 pm EDT May 7, 2026
Forecast Valid: 4pm EDT May 7, 2026-6pm EDT May 14, 2026
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