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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. Winds could gust as high as 20 kt. Partly sunny. Seas 1 ft or less.

      ⇑S 11kt
      < 1ft

    • Tonight

      Tonight:SSW wind around 16 kt, with gusts as high as 26 kt. A slight chance of showers after 2am.   Seas 1 ft or less.

      SSW 16kt
      < 1ft

    • Thursday

      Thursday:W wind 8 to 12 kt, with gusts as high as 20 kt. A slight chance of showers before 8am.   Seas 1 ft or less.

      W 12kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind around 7 kt becoming NW in the evening. A chance of showers before 2am.   Seas 1 ft or less.

      NW 7kt
      < 1ft

    • Friday

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

      NNW 7kt⇓
      < 1ft

    • Friday Night

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

      Light Wind
      < 1ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming SSE around 6 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑SSE 6kt
      < 1ft

    • Saturday Night

      Saturday Night:S wind 5 to 8 kt. A chance of showers.   Seas 1 ft or less.

      S 8kt
      < 1ft

    • Sunday

      Sunday:S wind around 6 kt. A chance of showers.   Seas 1 ft or less.

      S 6kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 5:33 am EDT Sep 9, 2026
Forecast Valid: 9am EDT Sep 9, 2026-6pm EDT Sep 15, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH

Today
Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. Winds could gust as high as 20 kt. Partly sunny. Seas 1 ft or less.
Tonight
SSW wind around 16 kt, with gusts as high as 26 kt. A slight chance of showers after 2am. Seas 1 ft or less.
Thursday
W wind 8 to 12 kt, with gusts as high as 20 kt. A slight chance of showers before 8am. Seas 1 ft or less.
Thursday Night
W wind around 7 kt becoming NW in the evening. A chance of showers before 2am. Seas 1 ft or less.
Friday
NNW wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.
Friday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Saturday
Variable winds less than 5 kt becoming SSE around 6 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Saturday Night
S wind 5 to 8 kt. A chance of showers. Seas 1 ft or less.
Sunday
S wind around 6 kt. A chance of showers. Seas 1 ft or less.

*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: 5:33 am EDT Sep 9, 2026
Forecast Valid: 9am EDT Sep 9, 2026-6pm EDT Sep 15, 2026
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