National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Tuesday

      Tuesday:NW wind 5 to 8 kt becoming WSW in the afternoon. Sunny. Seas around 1 ft.

      NW 8kt
      1ft

    • Tuesday Night

      Tuesday Night:SSW wind 6 to 11 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

      SSW 11kt⇓
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. A slight chance of showers. Seas 1 ft or less.

      ⇑S 9kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas 1 ft or less.

      S 7kt⇓
      < 1ft

    • Thursday

      Thursday:SSE wind 9 to 12 kt becoming SSW 14 to 17 kt in the afternoon. Winds could gust as high as 24 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      ⇑SSW 17kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind 10 to 13 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

      W 13kt
      < 1ft

    • Juneteenth

      Juneteenth:W wind 9 to 11 kt. A chance of showers. Seas 1 ft or less.

      W 11kt
      < 1ft

    • Friday Night

      Friday Night:W wind around 9 kt. Partly cloudy. Seas 1 ft or less.

      W 9kt
      < 1ft

    • Saturday

      Saturday:W wind 11 to 13 kt, with gusts as high as 20 kt. Sunny. Seas 1 ft or less.

      W 13kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 7:54 pm EDT Jun 15, 2026
Forecast Valid: 2am EDT Jun 16, 2026-6pm EDT Jun 22, 2026

View Nearby Observations

Detailed Forecast


Tuesday
NW wind 5 to 8 kt becoming WSW in the afternoon. Sunny. Seas around 1 ft.
Tuesday Night
SSW wind 6 to 11 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. A slight chance of showers. Seas 1 ft or less.
Wednesday Night
S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas 1 ft or less.
Thursday
SSE wind 9 to 12 kt becoming SSW 14 to 17 kt in the afternoon. Winds could gust as high as 24 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Thursday Night
W wind 10 to 13 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.
Juneteenth
W wind 9 to 11 kt. A chance of showers. Seas 1 ft or less.
Friday Night
W wind around 9 kt. Partly cloudy. Seas 1 ft or less.
Saturday
W wind 11 to 13 kt, with gusts as high as 20 kt. Sunny. Seas 1 ft or less.

Winds and seas may be higher in and near tstms.

*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: 7:54 pm EDT Jun 15, 2026
Forecast Valid: 2am EDT Jun 16, 2026-6pm EDT Jun 22, 2026
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