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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tonight

      Tonight:SSW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

      SSW 9kt⇓
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming SSE 5 to 8 kt in the afternoon. A slight chance of showers after 11am. Seas 1 ft or less.

      ⇑SSE 8kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A slight chance of showers after 2am. Seas 1 ft or less.

      S 7kt⇓
      < 1ft

    • Thursday

      Thursday:SSE wind 9 to 12 kt becoming SSW 13 to 16 kt in the afternoon. Winds could gust as high as 23 kt. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      ⇑SSW 16kt
      < 1ft

    • Thursday Night

      Thursday Night:SW wind 12 to 15 kt becoming W after midnight. Winds could gust as high as 22 kt. A chance of showers before 8pm. Seas around 1 ft.

      SW 15kt
      1ft

    • Juneteenth

      Juneteenth:W wind around 12 kt. Mostly sunny. Seas 1 ft or less.

      W 12kt
      < 1ft

    • Friday Night

      Friday Night:W wind 8 to 10 kt. Partly cloudy. Seas 1 ft or less.

      W 10kt
      < 1ft

    • Saturday

      Saturday:WNW wind 12 to 14 kt, with gusts as high as 21 kt. Sunny. Seas around 1 ft.

      WNW 14kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 5:30 am EDT Jun 16, 2026
Forecast Valid: 11am EDT Jun 16, 2026-6pm EDT Jun 22, 2026

View Nearby Observations

Detailed Forecast


Today
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Tonight
SSW wind 5 to 9 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 SSE 5 to 8 kt in the afternoon. A slight chance of showers after 11am. Seas 1 ft or less.
Wednesday Night
S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A slight chance of showers after 2am. Seas 1 ft or less.
Thursday
SSE wind 9 to 12 kt becoming SSW 13 to 16 kt in the afternoon. Winds could gust as high as 23 kt. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Thursday Night
SW wind 12 to 15 kt becoming W after midnight. Winds could gust as high as 22 kt. A chance of showers before 8pm. Seas around 1 ft.
Juneteenth
W wind around 12 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
W wind 8 to 10 kt. Partly cloudy. Seas 1 ft or less.
Saturday
WNW wind 12 to 14 kt, with gusts as high as 21 kt. Sunny. Seas around 1 ft.

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: 5:30 am EDT Jun 16, 2026
Forecast Valid: 11am EDT Jun 16, 2026-6pm EDT Jun 22, 2026
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