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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]

    • This Afternoon

      This Afternoon:SSW wind around 23 kt. Rain. Seas around 5 ft.

      SSW 23kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:WSW wind 22 to 24 kt becoming WNW after midnight. Rain, mainly before 7pm. Seas around 5 ft.

      W 24kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:WNW wind 16 to 21 kt becoming NNW 11 to 16 kt in the afternoon. Sunny. Seas 4 ft subsiding to 2 ft.

      WNW 21kt⇓
      4ftWaves Subsiding

      Small Craft Advisory
      Small Craft Advisory

    • Monday Night

      Monday Night:N wind 5 to 8 kt becoming SSE after midnight. A slight chance of rain and snow between 1am and 4am, then a slight chance of rain after 4am. Seas around 1 ft.

      SSE 8kt
      1ft

    • Tuesday

      Tuesday:SSE wind 10 to 13 kt becoming NNE 15 to 18 kt in the afternoon. Rain. Seas 2 to 3 ft.

      ⇑NNE 18kt
      2-3ft

    • Tuesday Night

      Tuesday Night:NNW wind 20 to 24 kt. A chance of rain before 1am. Seas 3 ft building to 5 ft.

      NNW 24kt
      Waves Building5ft

    • Wednesday

      Wednesday:NNW wind 14 to 17 kt becoming NW 9 to 12 kt in the afternoon. Sunny. Seas 6 ft subsiding to 4 ft.

      NNW 17kt⇓
      6ftWaves Subsiding

    • Wednesday Night

      Wednesday Night:WSW wind 10 to 13 kt increasing to 15 to 18 kt after midnight. Partly cloudy. Seas 3 to 4 ft.

      ⇑WSW 18kt
      3-4ft

    • Thursday

      Thursday:WSW wind 20 to 25 kt, with gusts as high as 31 kt. Partly sunny. Seas around 5 ft.

      WSW 25kt
      5ft


Associated Zone Forecast which includes this point

Last Update: 2:29 pm EST Nov 30, 2025
Forecast Valid: 3pm EST Nov 30, 2025-6pm EST Dec 7, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

This Afternoon
SSW wind around 23 kt. Rain. Seas around 5 ft.
Tonight
WSW wind 22 to 24 kt becoming WNW after midnight. Rain, mainly before 7pm. Seas around 5 ft.
Monday
WNW wind 16 to 21 kt becoming NNW 11 to 16 kt in the afternoon. Sunny. Seas 4 ft subsiding to 2 ft.
Monday Night
N wind 5 to 8 kt becoming SSE after midnight. A slight chance of rain and snow between 1am and 4am, then a slight chance of rain after 4am. Seas around 1 ft.
Tuesday
SSE wind 10 to 13 kt becoming NNE 15 to 18 kt in the afternoon. Rain. Seas 2 to 3 ft.
Tuesday Night
NNW wind 20 to 24 kt. A chance of rain before 1am. Seas 3 ft building to 5 ft.
Wednesday
NNW wind 14 to 17 kt becoming NW 9 to 12 kt in the afternoon. Sunny. Seas 6 ft subsiding to 4 ft.
Wednesday Night
WSW wind 10 to 13 kt increasing to 15 to 18 kt after midnight. Partly cloudy. Seas 3 to 4 ft.
Thursday
WSW wind 20 to 25 kt, with gusts as high as 31 kt. Partly sunny. Seas around 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: 2:29 pm EST Nov 30, 2025
Forecast Valid: 3pm EST Nov 30, 2025-6pm EST Dec 7, 2025
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