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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]

    • Tonight

      Tonight:SW wind 15 to 20 kt becoming W 22 to 27 kt in the evening. Winds could gust as high as 33 kt. A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and 10pm. Areas of fog before 10pm. Seas 4 ft building to 6 ft.

      ⇑W 27kt
      Waves Building6ft

      Small Craft Advisory
      Small Craft Advisory

    • Thanksgiving Day

      Thanksgiving Day:W wind 24 to 26 kt. Mostly sunny. Seas around 6 ft.

      W 26kt
      6ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday Night

      Thursday Night:W wind around 25 kt, with gusts as high as 32 kt. Mostly clear. Seas around 6 ft.

      W 25kt
      6ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:W wind 25 to 28 kt, with gusts as high as 39 kt. Mostly sunny. Seas around 6 ft.

      W 28kt
      6ft

    • Friday Night

      Friday Night:WNW wind 24 to 28 kt, with gusts as high as 34 kt. Mostly clear. Seas 4 to 5 ft.

      WNW 28kt
      4-5ft

    • Saturday

      Saturday:WNW wind 17 to 22 kt decreasing to 10 to 15 kt in the afternoon. Sunny. Seas 4 ft subsiding to 1 ft.

      WNW 22kt⇓
      4ftWaves Subsiding

    • Saturday Night

      Saturday Night:Variable winds less than 5 kt becoming S 5 to 10 kt in the evening. Increasing clouds. Seas around 1 ft.

      ⇑S 10kt
      1ft

    • Sunday

      Sunday:S wind 15 to 18 kt increasing to 20 to 23 kt in the afternoon. A chance of showers. Seas 2 ft building to 5 ft.

      ⇑S 23kt
      Waves Building5ft

    • Sunday Night

      Sunday Night:SSW wind 17 to 22 kt becoming WNW after midnight. A chance of showers. Seas 4 to 5 ft.

      SSW 22kt
      4-5ft


Associated Zone Forecast which includes this point

Last Update: 6:26 pm EST Nov 26, 2025
Forecast Valid: 8pm EST Nov 26, 2025-6pm EST Dec 3, 2025

View Nearby Observations

Detailed Forecast

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 PM EST THIS EVENING...

Tonight
SW wind 15 to 20 kt becoming W 22 to 27 kt in the evening. Winds could gust as high as 33 kt. A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and 10pm. Areas of fog before 10pm. Seas 4 ft building to 6 ft.
Thanksgiving Day
W wind 24 to 26 kt. Mostly sunny. Seas around 6 ft.
Thursday Night
W wind around 25 kt, with gusts as high as 32 kt. Mostly clear. Seas around 6 ft.
Friday
W wind 25 to 28 kt, with gusts as high as 39 kt. Mostly sunny. Seas around 6 ft.
Friday Night
WNW wind 24 to 28 kt, with gusts as high as 34 kt. Mostly clear. Seas 4 to 5 ft.
Saturday
WNW wind 17 to 22 kt decreasing to 10 to 15 kt in the afternoon. Sunny. Seas 4 ft subsiding to 1 ft.
Saturday Night
Variable winds less than 5 kt becoming S 5 to 10 kt in the evening. Increasing clouds. Seas around 1 ft.
Sunday
S wind 15 to 18 kt increasing to 20 to 23 kt in the afternoon. A chance of showers. Seas 2 ft building to 5 ft.
Sunday Night
SSW wind 17 to 22 kt becoming WNW after midnight. A chance of showers. Seas 4 to 5 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: 6:26 pm EST Nov 26, 2025
Forecast Valid: 8pm EST Nov 26, 2025-6pm EST Dec 3, 2025
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