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Hazardous Weather Conditions

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New York, NY Local Forecast Office

9NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Late Afternoon

      Late Afternoon:S wind around 15 kt, with gusts as high as 21 kt. A slight chance of showers. Seas 1 ft or less.

      S 15kt
      < 1ft

    • Tonight

      Tonight:SSW wind 16 to 18 kt, with gusts as high as 25 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 1 ft or less.

      SSW 18kt
      < 1ft

    • Thursday

      Thursday:WSW wind 15 to 18 kt becoming NW in the morning. Showers, mainly before 5pm. Seas 1 ft or less.

      NW 18kt
      < 1ft

    • Thursday Night

      Thursday Night:WNW wind 10 to 14 kt. A chance of showers before 8pm. Seas 1 ft or less.

      WNW 14kt
      < 1ft

    • Friday

      Friday:W wind 5 to 8 kt becoming S 12 to 17 kt. Increasing clouds. Seas 1 ft or less.

      ⇑S 17kt
      < 1ft

    • Friday Night

      Friday Night:SSW wind 16 to 20 kt becoming WSW after midnight. Winds could gust as high as 26 kt. Mostly cloudy, then gradually becoming mostly clear. Seas 1 ft or less.

      SSW 20kt
      < 1ft

    • Saturday

      Saturday:W wind 17 to 19 kt, with gusts as high as 27 kt. Sunny. Seas 1 ft or less.

      W 19kt
      < 1ft

    • Saturday Night

      Saturday Night:WNW wind 6 to 10 kt becoming N after midnight. Partly cloudy. Seas 1 ft or less.

      WNW 10kt
      < 1ft

    • Sunday

      Sunday:ENE wind 8 to 12 kt becoming ESE in the afternoon. Cloudy. Seas 1 ft or less.

      ESE 12kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:16 pm EDT Mar 11, 2026
Forecast Valid: 5pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026

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Detailed Forecast

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

Late Afternoon
S wind around 15 kt, with gusts as high as 21 kt. A slight chance of showers. Seas 1 ft or less.
Tonight
SSW wind 16 to 18 kt, with gusts as high as 25 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 1 ft or less.
Thursday
WSW wind 15 to 18 kt becoming NW in the morning. Showers, mainly before 5pm. Seas 1 ft or less.
Thursday Night
WNW wind 10 to 14 kt. A chance of showers before 8pm. Seas 1 ft or less.
Friday
W wind 5 to 8 kt becoming S 12 to 17 kt. Increasing clouds. Seas 1 ft or less.
Friday Night
SSW wind 16 to 20 kt becoming WSW after midnight. Winds could gust as high as 26 kt. Mostly cloudy, then gradually becoming mostly clear. Seas 1 ft or less.
Saturday
W wind 17 to 19 kt, with gusts as high as 27 kt. Sunny. Seas 1 ft or less.
Saturday Night
WNW wind 6 to 10 kt becoming N after midnight. Partly cloudy. Seas 1 ft or less.
Sunday
ENE wind 8 to 12 kt becoming ESE in the afternoon. Cloudy. 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: 40.64°N 73.36°W
Last Update: 3:16 pm EDT Mar 11, 2026
Forecast Valid: 5pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
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