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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Overnight

      Overnight:NNW wind 6 to 9 kt. A chance of sprinkles. Seas 1 ft or less.

      NNW 9kt
      < 1ft

    • Tuesday

      Tuesday:N wind 5 to 10 kt becoming WNW in the afternoon. Sunny. Seas 1 ft or less.

      N 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSW wind 8 to 10 kt. Increasing clouds. Seas 1 ft or less.

      SSW 10kt
      < 1ft

    • Wednesday

      Wednesday:S wind 12 to 15 kt increasing to 16 to 19 kt in the afternoon. Winds could gust as high as 25 kt. A chance of showers, mainly after 2pm. Seas 1 ft or less.

      ⇑S 19kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind 15 to 19 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Seas 1 ft or less.

      S 19kt
      < 1ft

    • Thursday

      Thursday:S wind 6 to 8 kt. Showers likely, with thunderstorms also possible after 2pm. Seas 1 ft or less.

      S 8kt
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds less than 5 kt becoming NW 5 to 7 kt in the evening. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.

      ⇑NW 7kt
      < 1ft

    • Friday

      Friday:NW wind around 9 kt. A chance of showers. Seas 1 ft or less.

      NW 9kt
      < 1ft

    • Friday Night

      Friday Night:W wind around 7 kt. Partly cloudy. Seas 1 ft or less.

      W 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:30 pm EDT May 11, 2026
Forecast Valid: 12am EDT May 12, 2026-6pm EDT May 18, 2026

View Nearby Observations

Detailed Forecast


Overnight
NNW wind 6 to 9 kt. A chance of sprinkles. Seas 1 ft or less.
Tuesday
N wind 5 to 10 kt becoming WNW in the afternoon. Sunny. Seas 1 ft or less.
Tuesday Night
SSW wind 8 to 10 kt. Increasing clouds. Seas 1 ft or less.
Wednesday
S wind 12 to 15 kt increasing to 16 to 19 kt in the afternoon. Winds could gust as high as 25 kt. A chance of showers, mainly after 2pm. Seas 1 ft or less.
Wednesday Night
S wind 15 to 19 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Seas 1 ft or less.
Thursday
S wind 6 to 8 kt. Showers likely, with thunderstorms also possible after 2pm. Seas 1 ft or less.
Thursday Night
Variable winds less than 5 kt becoming NW 5 to 7 kt in the evening. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.
Friday
NW wind around 9 kt. A chance of showers. Seas 1 ft or less.
Friday Night
W wind around 7 kt. Partly cloudy. 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: 8:30 pm EDT May 11, 2026
Forecast Valid: 12am EDT May 12, 2026-6pm EDT May 18, 2026
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