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Hazardous Weather Conditions

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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:S wind 9 to 12 kt increasing to 14 to 17 kt in the afternoon. Winds could gust as high as 23 kt. A chance of showers after 2pm. Seas 2 ft building to 4 ft.

      ⇑S 17kt
      Waves Building4ft

    • Tonight

      Tonight:S wind 20 to 22 kt, with gusts as high as 29 kt. A chance of showers and thunderstorms. Seas 5 to 6 ft.

      S 22kt
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:WNW wind 17 to 21 kt, with gusts as high as 27 kt. Rain showers likely before 2pm, then a chance of rain and snow showers. Seas around 5 ft.

      WNW 21kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday Night

      Thursday Night:WNW wind 12 to 15 kt, with gusts as high as 21 kt. Mostly cloudy, then gradually becoming mostly clear. Seas around 4 ft.

      WNW 15kt
      4ft

    • Friday

      Friday:W wind 8 to 11 kt becoming S 18 to 23 kt. Winds could gust as high as 30 kt. Increasing clouds. Seas 3 ft building to 5 ft.

      ⇑S 23kt
      Waves Building5ft

    • Friday Night

      Friday Night:SSW wind 23 to 26 kt becoming WSW after midnight. Winds could gust as high as 33 kt. Mostly cloudy, then gradually becoming mostly clear. Seas 7 to 8 ft.

      SSW 26kt
      7-8ft

    • Saturday

      Saturday:W wind 15 to 20 kt, with gusts as high as 26 kt. Sunny. Seas 7 ft subsiding to 5 ft.

      W 20kt
      7ftWaves Subsiding

    • Saturday Night

      Saturday Night:WNW wind 8 to 11 kt becoming N after midnight. Mostly cloudy. Seas 2 to 3 ft.

      WNW 11kt
      2-3ft

    • Sunday

      Sunday:ESE wind 11 to 16 kt. Cloudy. Seas 2 to 3 ft.

      ESE 16kt
      2-3ft


Associated Zone Forecast which includes this point

Last Update: 5:42 am EDT Mar 11, 2026
Forecast Valid: 7am EDT Mar 11, 2026-6pm EDT Mar 17, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH

Today
S wind 9 to 12 kt increasing to 14 to 17 kt in the afternoon. Winds could gust as high as 23 kt. A chance of showers after 2pm. Seas 2 ft building to 4 ft.
Tonight
S wind 20 to 22 kt, with gusts as high as 29 kt. A chance of showers and thunderstorms. Seas 5 to 6 ft.
Thursday
WNW wind 17 to 21 kt, with gusts as high as 27 kt. Rain showers likely before 2pm, then a chance of rain and snow showers. Seas around 5 ft.
Thursday Night
WNW wind 12 to 15 kt, with gusts as high as 21 kt. Mostly cloudy, then gradually becoming mostly clear. Seas around 4 ft.
Friday
W wind 8 to 11 kt becoming S 18 to 23 kt. Winds could gust as high as 30 kt. Increasing clouds. Seas 3 ft building to 5 ft.
Friday Night
SSW wind 23 to 26 kt becoming WSW after midnight. Winds could gust as high as 33 kt. Mostly cloudy, then gradually becoming mostly clear. Seas 7 to 8 ft.
Saturday
W wind 15 to 20 kt, with gusts as high as 26 kt. Sunny. Seas 7 ft subsiding to 5 ft.
Saturday Night
WNW wind 8 to 11 kt becoming N after midnight. Mostly cloudy. Seas 2 to 3 ft.
Sunday
ESE wind 11 to 16 kt. Cloudy. Seas 2 to 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: 5:42 am EDT Mar 11, 2026
Forecast Valid: 7am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
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