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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑S 8kt
      < 1ft

    • Tonight

      Tonight:SSE wind around 9 kt. Increasing clouds. Seas 1 ft or less.

      SSE 9kt
      < 1ft

    • Thursday

      Thursday:S wind 14 to 17 kt, with gusts as high as 25 kt. A chance of showers, with thunderstorms also possible after 2pm.   Seas 1 ft or less.

      S 17kt
      < 1ft

    • Thursday Night

      Thursday Night:SW wind 10 to 15 kt becoming W after midnight. Winds could gust as high as 21 kt. Partly cloudy. Seas 1 ft or less.

      SW 15kt
      < 1ft

    • Juneteenth

      Juneteenth:W wind around 11 kt. Mostly sunny. Seas 1 ft or less.

      W 11kt
      < 1ft

    • Friday Night

      Friday Night:WNW wind 10 to 12 kt. Mostly clear. Seas 1 ft or less.

      WNW 12kt
      < 1ft

    • Saturday

      Saturday:W wind around 15 kt, with gusts as high as 22 kt. Sunny. Seas around 1 ft.

      W 15kt
      1ft

    • Saturday Night

      Saturday Night:WNW wind 9 to 13 kt. Mostly clear. Seas 1 ft or less.

      WNW 13kt
      < 1ft

    • Sunday

      Sunday:WNW wind around 10 kt. Sunny. Seas 1 ft or less.

      WNW 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:08 am EDT Jun 17, 2026
Forecast Valid: 11am EDT Jun 17, 2026-6pm EDT Jun 23, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH

Today
Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Sunny. Seas 1 ft or less.
Tonight
SSE wind around 9 kt. Increasing clouds. Seas 1 ft or less.
Thursday
S wind 14 to 17 kt, with gusts as high as 25 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.
Thursday Night
SW wind 10 to 15 kt becoming W after midnight. Winds could gust as high as 21 kt. Partly cloudy. Seas 1 ft or less.
Juneteenth
W wind around 11 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
WNW wind 10 to 12 kt. Mostly clear. Seas 1 ft or less.
Saturday
W wind around 15 kt, with gusts as high as 22 kt. Sunny. Seas around 1 ft.
Saturday Night
WNW wind 9 to 13 kt. Mostly clear. Seas 1 ft or less.
Sunday
WNW wind around 10 kt. 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: 40.91°N 73.39°W
Last Update: 3:08 am EDT Jun 17, 2026
Forecast Valid: 11am EDT Jun 17, 2026-6pm EDT Jun 23, 2026
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