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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:NW wind 12 to 15 kt increasing to 16 to 19 kt in the afternoon. Winds could gust as high as 29 kt. Mostly sunny. Seas around 1 ft.

      ⇑NW 19kt
      1ft

    • Tonight

      Tonight:NW wind 15 to 18 kt becoming N 12 to 15 kt after midnight. Winds could gust as high as 24 kt. Mostly clear. Seas around 1 ft.

      NW 18kt⇓
      1ft

    • Wednesday

      Wednesday:NNE wind 5 to 9 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.

      NNE 9kt⇓
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

      S 8kt⇓
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming SSE 5 to 8 kt in the morning. Mostly sunny. Seas 1 ft or less.

      ⇑SSE 8kt
      < 1ft

    • Thursday Night

      Thursday Night:SSE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

      SSE 7kt⇓
      < 1ft

    • Friday

      Friday:Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑S 8kt
      < 1ft

    • Friday Night

      Friday Night:SW wind 5 to 7 kt. Partly cloudy. Seas 1 ft or less.

      SW 7kt
      < 1ft

    • Saturday

      Saturday:WSW wind 5 to 8 kt becoming NW in the afternoon. Mostly sunny. Seas 1 ft or less.

      WNW 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 6:23 am EDT Apr 7, 2026
Forecast Valid: 10am EDT Apr 7, 2026-6pm EDT Apr 13, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING

Today
NW wind 12 to 15 kt increasing to 16 to 19 kt in the afternoon. Winds could gust as high as 29 kt. Mostly sunny. Seas around 1 ft.
Tonight
NW wind 15 to 18 kt becoming N 12 to 15 kt after midnight. Winds could gust as high as 24 kt. Mostly clear. Seas around 1 ft.
Wednesday
NNE wind 5 to 9 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.
Wednesday Night
S wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming SSE 5 to 8 kt in the morning. Mostly sunny. Seas 1 ft or less.
Thursday Night
SSE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.
Friday
Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Friday Night
SW wind 5 to 7 kt. Partly cloudy. Seas 1 ft or less.
Saturday
WSW wind 5 to 8 kt becoming NW in the afternoon. 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: 40.91°N 73.39°W
Last Update: 6:23 am EDT Apr 7, 2026
Forecast Valid: 10am EDT Apr 7, 2026-6pm EDT Apr 13, 2026
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