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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:WNW wind around 13 kt. Sunny. Seas 1 ft or less.

      WNW 13kt
      < 1ft

    • Thursday Night

      Thursday Night:WNW wind around 15 kt. Mostly clear. Seas 1 ft or less.

      WNW 15kt
      < 1ft

    • Friday

      Friday:WNW wind around 15 kt. Sunny. Seas 1 ft or less.

      WNW 15kt
      < 1ft

    • Friday Night

      Friday Night:NW wind 11 to 14 kt decreasing to 8 to 11 kt after midnight. Partly cloudy. Seas 1 ft or less.

      NW 14kt⇓
      < 1ft

    • Saturday

      Saturday:N wind 8 to 10 kt. Partly sunny. Seas 1 ft or less.

      N 10kt
      < 1ft

    • Saturday Night

      Saturday Night:N wind 12 to 15 kt increasing to 18 to 21 kt after midnight. Winds could gust as high as 27 kt. A chance of snow after 1am.   Seas 1 ft or less.

      ⇑N 21kt
      < 1ft

    • Sunday

      Sunday:N wind around 23 kt, with gusts as high as 30 kt. A chance of snow.   Seas 1 ft or less.

      N 23kt
      < 1ft

    • Sunday Night

      Sunday Night:NW wind 19 to 22 kt decreasing to 16 to 19 kt after midnight. Mostly cloudy. Seas 1 ft or less.

      NW 22kt⇓
      < 1ft

    • Monday

      Monday:NW wind 12 to 15 kt, with gusts as high as 21 kt. Mostly sunny. Seas 1 ft or less.

      NW 15kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 1:43 am EST Jan 29, 2026
Forecast Valid: 4am EST Jan 29, 2026-6pm EST Feb 4, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE

Thursday
WNW wind around 13 kt. Sunny. Seas 1 ft or less.
Thursday Night
WNW wind around 15 kt. Mostly clear. Seas 1 ft or less.
Friday
WNW wind around 15 kt. Sunny. Seas 1 ft or less.
Friday Night
NW wind 11 to 14 kt decreasing to 8 to 11 kt after midnight. Partly cloudy. Seas 1 ft or less.
Saturday
N wind 8 to 10 kt. Partly sunny. Seas 1 ft or less.
Saturday Night
N wind 12 to 15 kt increasing to 18 to 21 kt after midnight. Winds could gust as high as 27 kt. A chance of snow after 1am. Seas 1 ft or less.
Sunday
N wind around 23 kt, with gusts as high as 30 kt. A chance of snow. Seas 1 ft or less.
Sunday Night
NW wind 19 to 22 kt decreasing to 16 to 19 kt after midnight. Mostly cloudy. Seas 1 ft or less.
Monday
NW wind 12 to 15 kt, with gusts as high as 21 kt. Mostly 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: 1:43 am EST Jan 29, 2026
Forecast Valid: 4am EST Jan 29, 2026-6pm EST Feb 4, 2026
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