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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:NE wind 18 to 21 kt, with gusts as high as 29 kt. Mostly sunny. Seas 1 ft or less.

      NE 21kt
      < 1ft

    • Thursday Night

      Thursday Night:NNE wind around 20 kt, with gusts as high as 29 kt. Mostly cloudy. Seas 1 ft or less.

      NNE 20kt
      < 1ft

    • Friday

      Friday:NNE wind around 22 kt, with gusts as high as 32 kt. A chance of showers.   Seas 1 ft or less.

      NNE 22kt
      < 1ft

    • Friday Night

      Friday Night:N wind around 24 kt, with gusts as high as 35 kt. A chance of showers.   Seas 1 ft or less.

      N 24kt
      < 1ft

    • Saturday

      Saturday:N wind 20 to 22 kt, with gusts as high as 32 kt. Showers likely, mainly after 2pm.   Seas 1 ft or less.

      N 22kt
      < 1ft

    • Saturday Night

      Saturday Night:NNW wind 17 to 19 kt, with gusts as high as 27 kt. Showers likely.   Seas 1 ft or less.

      NNW 19kt
      < 1ft

    • Sunday

      Sunday:N wind 14 to 17 kt, with gusts as high as 25 kt. A chance of showers.   Seas 1 ft or less.

      N 17kt
      < 1ft

    • Sunday Night

      Sunday Night:N wind 11 to 13 kt, with gusts as high as 20 kt. A chance of showers.   Seas 1 ft or less.

      N 13kt
      < 1ft

    • Monday

      Monday:NNW wind 8 to 11 kt. Partly sunny. Seas 1 ft or less.

      NNW 11kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 5:46 pm EDT Sep 23, 2026
Forecast Valid: 1am EDT Sep 24, 2026-6pm EDT Sep 30, 2026

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Detailed Forecast

...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT...

Thursday
NE wind 18 to 21 kt, with gusts as high as 29 kt. Mostly sunny. Seas 1 ft or less.
Thursday Night
NNE wind around 20 kt, with gusts as high as 29 kt. Mostly cloudy. Seas 1 ft or less.
Friday
NNE wind around 22 kt, with gusts as high as 32 kt. A chance of showers. Seas 1 ft or less.
Friday Night
N wind around 24 kt, with gusts as high as 35 kt. A chance of showers. Seas 1 ft or less.
Saturday
N wind 20 to 22 kt, with gusts as high as 32 kt. Showers likely, mainly after 2pm. Seas 1 ft or less.
Saturday Night
NNW wind 17 to 19 kt, with gusts as high as 27 kt. Showers likely. Seas 1 ft or less.
Sunday
N wind 14 to 17 kt, with gusts as high as 25 kt. A chance of showers. Seas 1 ft or less.
Sunday Night
N wind 11 to 13 kt, with gusts as high as 20 kt. A chance of showers. Seas 1 ft or less.
Monday
NNW wind 8 to 11 kt. Partly sunny. 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: 40.62°N 73.59°W
Last Update: 5:46 pm EDT Sep 23, 2026
Forecast Valid: 1am EDT Sep 24, 2026-6pm EDT Sep 30, 2026
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