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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:WNW wind 13 to 15 kt becoming SW in the afternoon. Winds could gust as high as 24 kt. Sunny. Seas around 4 ft.

      WNW 15kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:WSW wind around 10 kt becoming WNW after midnight. A slight chance of showers between 11pm and 2am.   Seas 2 to 3 ft.

      WSW 10kt
      2-3ft

    • Tuesday

      Tuesday:W wind 14 to 18 kt. Mostly sunny. Seas around 3 ft.

      W 18kt
      3ft

    • Tuesday Night

      Tuesday Night:NW wind 14 to 19 kt becoming N after midnight. Mostly clear. Seas 2 to 3 ft.

      NW 19kt
      2-3ft

    • Wednesday

      Wednesday:NNE wind 7 to 11 kt becoming SE in the afternoon. Sunny. Seas around 2 ft.

      NNE 11kt
      2ft

    • Wednesday Night

      Wednesday Night:S wind around 9 kt. Mostly clear. Seas around 2 ft.

      S 9kt
      2ft

    • Thursday

      Thursday:SE wind 8 to 11 kt. Mostly sunny. Seas around 2 ft.

      SE 11kt
      2ft

    • Thursday Night

      Thursday Night:SSE wind 10 to 13 kt. Partly cloudy. Seas around 2 ft.

      SSE 13kt
      2ft

    • Friday

      Friday:S wind 8 to 12 kt. Mostly sunny. Seas around 3 ft.

      S 12kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 7:36 am EDT Apr 6, 2026
Forecast Valid: 8am EDT Apr 6, 2026-6pm EDT Apr 12, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

Today
WNW wind 13 to 15 kt becoming SW in the afternoon. Winds could gust as high as 24 kt. Sunny. Seas around 4 ft.
Tonight
WSW wind around 10 kt becoming WNW after midnight. A slight chance of showers between 11pm and 2am. Seas 2 to 3 ft.
Tuesday
W wind 14 to 18 kt. Mostly sunny. Seas around 3 ft.
Tuesday Night
NW wind 14 to 19 kt becoming N after midnight. Mostly clear. Seas 2 to 3 ft.
Wednesday
NNE wind 7 to 11 kt becoming SE in the afternoon. Sunny. Seas around 2 ft.
Wednesday Night
S wind around 9 kt. Mostly clear. Seas around 2 ft.
Thursday
SE wind 8 to 11 kt. Mostly sunny. Seas around 2 ft.
Thursday Night
SSE wind 10 to 13 kt. Partly cloudy. Seas around 2 ft.
Friday
S wind 8 to 12 kt. Mostly sunny. Seas around 3 ft.

*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: 40.53°N 73.44°W
Last Update: 7:36 am EDT Apr 6, 2026
Forecast Valid: 8am EDT Apr 6, 2026-6pm EDT Apr 12, 2026
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