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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NW wind 13 to 17 kt, with gusts as high as 27 kt. Clear. Seas 1 ft or less.

      NW 17kt
      < 1ft

    • Tuesday

      Tuesday:NW wind 9 to 12 kt. Sunny. Seas 1 ft or less.

      NW 12kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Clear. Seas 1 ft or less.

      NW 7kt⇓
      < 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 12 to 17 kt. Mostly clear. Seas 1 ft or less.

      SW 17kt
      < 1ft

    • Thursday

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

      WSW 9kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

      W 8kt
      < 1ft

    • Friday

      Friday:WNW wind 5 to 8 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.

      WSW 8kt
      < 1ft

    • Friday Night

      Friday Night:WSW wind around 7 kt becoming WNW after midnight. Mostly clear. Seas 1 ft or less.

      WSW 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:01 pm EDT Oct 5, 2026
Forecast Valid: 5pm EDT Oct 5, 2026-6pm EDT Oct 12, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING...

Tonight
NW wind 13 to 17 kt, with gusts as high as 27 kt. Clear. Seas 1 ft or less.
Tuesday
NW wind 9 to 12 kt. Sunny. Seas 1 ft or less.
Tuesday Night
NW wind 5 to 7 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 12 to 17 kt. Mostly clear. Seas 1 ft or less.
Thursday
WSW wind around 9 kt. Sunny. Seas 1 ft or less.
Thursday Night
W wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.
Friday
WNW wind 5 to 8 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.
Friday Night
WSW wind around 7 kt becoming WNW 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: 3:01 pm EDT Oct 5, 2026
Forecast Valid: 5pm EDT Oct 5, 2026-6pm EDT Oct 12, 2026
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