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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Tuesday

      Tuesday:W wind around 18 kt, with gusts as high as 24 kt. Sunny. Seas 1 ft or less.

      W 18kt
      < 1ft

    • Tuesday Night

      Tuesday Night:W wind 13 to 16 kt decreasing to 9 to 12 kt after midnight. Mostly clear. Seas 1 ft or less.

      W 16kt⇓
      < 1ft

    • Wednesday

      Wednesday:W wind 8 to 11 kt becoming SSW 13 to 16 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑SSW 16kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SW wind 15 to 19 kt. Mostly cloudy. Seas 1 ft or less.

      SW 19kt
      < 1ft

    • Thursday

      Thursday:WSW wind around 14 kt. Mostly sunny. Seas 1 ft or less.

      WSW 14kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind around 12 kt. Partly cloudy. Seas 1 ft or less.

      W 12kt
      < 1ft

    • Friday

      Friday:W wind 12 to 15 kt. Partly sunny. Seas 1 ft or less.

      W 15kt
      < 1ft

    • Friday Night

      Friday Night:WNW wind 14 to 16 kt. Mostly cloudy. Seas 1 ft or less.

      WNW 16kt
      < 1ft

    • Saturday

      Saturday:NNW wind around 12 kt. Partly sunny. Seas 1 ft or less.

      NNW 12kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 1:07 am EST Jan 20, 2026
Forecast Valid: 2am EST Jan 20, 2026-6pm EST Jan 26, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Tuesday
W wind around 18 kt, with gusts as high as 24 kt. Sunny. Seas 1 ft or less.
Tuesday Night
W wind 13 to 16 kt decreasing to 9 to 12 kt after midnight. Mostly clear. Seas 1 ft or less.
Wednesday
W wind 8 to 11 kt becoming SSW 13 to 16 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Wednesday Night
SW wind 15 to 19 kt. Mostly cloudy. Seas 1 ft or less.
Thursday
WSW wind around 14 kt. Mostly sunny. Seas 1 ft or less.
Thursday Night
W wind around 12 kt. Partly cloudy. Seas 1 ft or less.
Friday
W wind 12 to 15 kt. Partly sunny. Seas 1 ft or less.
Friday Night
WNW wind 14 to 16 kt. Mostly cloudy. Seas 1 ft or less.
Saturday
NNW wind around 12 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: 1:07 am EST Jan 20, 2026
Forecast Valid: 2am EST Jan 20, 2026-6pm EST Jan 26, 2026
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