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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Friday

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

      Light Wind
      < 1ft

    • Friday Night

      Friday Night:W wind 7 to 9 kt becoming NW after midnight. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas 1 ft or less.

      NW 9kt
      < 1ft

    • Saturday

      Saturday:NW wind 6 to 8 kt. Sunny. Seas 1 ft or less.

      NW 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 9 to 14 kt in the morning. Winds could gust as high as 21 kt. A slight chance of showers after 2pm. Seas 1 ft or less.

      ⇑S 14kt
      < 1ft

    • Sunday Night

      Sunday Night:S wind 11 to 14 kt becoming WSW 8 to 11 kt after midnight. Winds could gust as high as 21 kt. Showers, mainly between 8pm and 2am. Seas 1 ft or less.

      S 14kt⇓
      < 1ft

    • Monday

      Monday:W wind around 7 kt. A chance of showers before 8am. Seas 1 ft or less.

      W 7kt
      < 1ft

    • Monday Night

      Monday Night:WNW wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

      WNW 6kt⇓
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑S 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:50 pm EDT Jun 11, 2026
Forecast Valid: 1am EDT Jun 12, 2026-6pm EDT Jun 18, 2026

View Nearby Observations

Detailed Forecast


Friday
Variable winds 5 kt or less. A chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Friday Night
W wind 7 to 9 kt becoming NW after midnight. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas 1 ft or less.
Saturday
NW wind 6 to 8 kt. 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 9 to 14 kt in the morning. Winds could gust as high as 21 kt. A slight chance of showers after 2pm. Seas 1 ft or less.
Sunday Night
S wind 11 to 14 kt becoming WSW 8 to 11 kt after midnight. Winds could gust as high as 21 kt. Showers, mainly between 8pm and 2am. Seas 1 ft or less.
Monday
W wind around 7 kt. A chance of showers before 8am. Seas 1 ft or less.
Monday Night
WNW wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. 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: 8:50 pm EDT Jun 11, 2026
Forecast Valid: 1am EDT Jun 12, 2026-6pm EDT Jun 18, 2026
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