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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. A chance of showers, mainly before 8pm.   Seas 1 ft or less.

      NE 10kt⇓
      < 1ft

    • Monday

      Monday:NW wind 9 to 12 kt increasing to 15 to 18 kt in the afternoon. Winds could gust as high as 26 kt. Sunny. Seas 1 ft or less.

      ⇑NW 18kt
      < 1ft

    • Monday Night

      Monday Night:NW wind around 14 kt, with gusts as high as 20 kt. Clear. Seas 1 ft or less.

      NW 14kt
      < 1ft

    • Tuesday

      Tuesday:NW wind 9 to 11 kt. Sunny. Seas 1 ft or less.

      NW 11kt
      < 1ft

    • Tuesday Night

      Tuesday Night:WNW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Clear. Seas 1 ft or less.

      WNW 8kt⇓
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming SSW 9 to 14 kt in the morning. Sunny. Seas 1 ft or less.

      ⇑SSW 14kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SW wind 9 to 14 kt, with gusts as high as 20 kt. Mostly clear. Seas 1 ft or less.

      SW 14kt
      < 1ft

    • Thursday

      Thursday:WSW wind 7 to 9 kt. Sunny. Seas 1 ft or less.

      WSW 9kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind around 7 kt becoming NW after midnight. Mostly clear. Seas 1 ft or less.

      W 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:27 pm EDT Oct 4, 2026
Forecast Valid: 6pm EDT Oct 4, 2026-6pm EDT Oct 11, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

Tonight
NE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. A chance of showers, mainly before 8pm. Seas 1 ft or less.
Monday
NW wind 9 to 12 kt increasing to 15 to 18 kt in the afternoon. Winds could gust as high as 26 kt. Sunny. Seas 1 ft or less.
Monday Night
NW wind around 14 kt, with gusts as high as 20 kt. Clear. Seas 1 ft or less.
Tuesday
NW wind 9 to 11 kt. Sunny. Seas 1 ft or less.
Tuesday Night
WNW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Clear. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming SSW 9 to 14 kt in the morning. Sunny. Seas 1 ft or less.
Wednesday Night
SW wind 9 to 14 kt, with gusts as high as 20 kt. Mostly clear. Seas 1 ft or less.
Thursday
WSW wind 7 to 9 kt. Sunny. Seas 1 ft or less.
Thursday Night
W wind around 7 kt becoming NW after midnight. Mostly clear. 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: 2:27 pm EDT Oct 4, 2026
Forecast Valid: 6pm EDT Oct 4, 2026-6pm EDT Oct 11, 2026
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