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Hazardous Weather Conditions

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New York, NY Local Forecast Office

19NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Late Afternoon

      Late Afternoon:S wind around 17 kt. A slight chance of showers after 5pm. Seas 3 to 4 ft.

      S 17kt
      3-4ft

    • Tonight

      Tonight:SSW wind 17 to 19 kt, with gusts as high as 26 kt. A slight chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Seas 4 to 5 ft.

      SSW 19kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:WSW wind 16 to 19 kt becoming NW in the morning. Showers, mainly before 5pm. Seas 3 to 4 ft.

      NW 19kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday Night

      Thursday Night:WNW wind 11 to 14 kt. A chance of showers before 8pm. Seas around 3 ft.

      WNW 14kt
      3ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:W wind 6 to 9 kt becoming S 14 to 19 kt. Increasing clouds. Seas 2 ft building to 4 ft.

      ⇑S 19kt
      Waves Building4ft

    • Friday Night

      Friday Night:S wind 15 to 18 kt becoming WSW after midnight. Winds could gust as high as 28 kt. Mostly cloudy, then gradually becoming mostly clear. Seas around 5 ft.

      S 18kt
      5ft

    • Saturday

      Saturday:W wind 18 to 20 kt, with gusts as high as 27 kt. Sunny. Seas 4 to 5 ft.

      W 20kt
      4-5ft

    • Saturday Night

      Saturday Night:WNW wind 7 to 11 kt becoming N after midnight. Partly cloudy. Seas 2 to 3 ft.

      WNW 11kt
      2-3ft

    • Sunday

      Sunday:E wind 9 to 14 kt. Cloudy. Seas around 2 ft.

      E 14kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 3:16 pm EDT Mar 11, 2026
Forecast Valid: 4pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026

View Nearby Observations

Detailed Forecast

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

Late Afternoon
S wind around 17 kt. A slight chance of showers after 5pm. Seas 3 to 4 ft.
Tonight
SSW wind 17 to 19 kt, with gusts as high as 26 kt. A slight chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Seas 4 to 5 ft.
Thursday
WSW wind 16 to 19 kt becoming NW in the morning. Showers, mainly before 5pm. Seas 3 to 4 ft.
Thursday Night
WNW wind 11 to 14 kt. A chance of showers before 8pm. Seas around 3 ft.
Friday
W wind 6 to 9 kt becoming S 14 to 19 kt. Increasing clouds. Seas 2 ft building to 4 ft.
Friday Night
S wind 15 to 18 kt becoming WSW after midnight. Winds could gust as high as 28 kt. Mostly cloudy, then gradually becoming mostly clear. Seas around 5 ft.
Saturday
W wind 18 to 20 kt, with gusts as high as 27 kt. Sunny. Seas 4 to 5 ft.
Saturday Night
WNW wind 7 to 11 kt becoming N after midnight. Partly cloudy. Seas 2 to 3 ft.
Sunday
E wind 9 to 14 kt. Cloudy. Seas around 2 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: 40.57°N 73.57°W
Last Update: 3:16 pm EDT Mar 11, 2026
Forecast Valid: 4pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
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