National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:N wind 7 to 9 kt becoming NNE after midnight. A chance of snow, mainly after 4am. Seas around 1 ft.

      N 9kt
      1ft

    • Sunday

      Sunday:ENE wind 9 to 14 kt increasing to 18 to 23 kt. Snow before 4pm, then snow and sleet. The snow and sleet could be heavy at times. Seas 1 ft building to 3 ft.

      ⇑ENE 23kt
      Waves Building3ft

    • Sunday Night

      Sunday Night:NNE wind 20 to 25 kt decreasing to 15 to 20 kt after midnight. Snow and sleet, becoming all snow after 4am. The snow and sleet could be heavy at times. Seas 2 to 3 ft.

      NNE 25kt⇓
      2-3ft

    • Monday

      Monday:N wind 9 to 12 kt becoming WNW 14 to 19 kt in the afternoon. Snow likely, mainly before 7am. Seas 1 to 2 ft.

      ⇑WNW 19kt
      1-2ft

    • Monday Night

      Monday Night:WNW wind around 22 kt. Partly cloudy. Seas around 3 ft.

      WNW 22kt
      3ft

    • Tuesday

      Tuesday:WSW wind 14 to 19 kt, with gusts as high as 26 kt. Mostly sunny. Seas 3 ft subsiding to 1 ft.

      WSW 19kt
      3ftWaves Subsiding

    • Tuesday Night

      Tuesday Night:WNW wind 13 to 18 kt, with gusts as high as 24 kt. Partly cloudy. Seas around 1 ft.

      WNW 18kt
      1ft

    • Wednesday

      Wednesday:W wind 10 to 12 kt. Sunny. Seas 1 ft or less.

      W 12kt
      < 1ft

    • Wednesday Night

      Wednesday Night:W wind 8 to 10 kt. Mostly cloudy. Seas 1 ft or less.

      W 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 1:15 pm EST Jan 24, 2026
Forecast Valid: 5pm EST Jan 24, 2026-6pm EST Jan 31, 2026

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Detailed Forecast

...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY

Tonight
N wind 7 to 9 kt becoming NNE after midnight. A chance of snow, mainly after 4am. Seas around 1 ft.
Sunday
ENE wind 9 to 14 kt increasing to 18 to 23 kt. Snow before 4pm, then snow and sleet. The snow and sleet could be heavy at times. Seas 1 ft building to 3 ft.
Sunday Night
NNE wind 20 to 25 kt decreasing to 15 to 20 kt after midnight. Snow and sleet, becoming all snow after 4am. The snow and sleet could be heavy at times. Seas 2 to 3 ft.
Monday
N wind 9 to 12 kt becoming WNW 14 to 19 kt in the afternoon. Snow likely, mainly before 7am. Seas 1 to 2 ft.
Monday Night
WNW wind around 22 kt. Partly cloudy. Seas around 3 ft.
Tuesday
WSW wind 14 to 19 kt, with gusts as high as 26 kt. Mostly sunny. Seas 3 ft subsiding to 1 ft.
Tuesday Night
WNW wind 13 to 18 kt, with gusts as high as 24 kt. Partly cloudy. Seas around 1 ft.
Wednesday
W wind 10 to 12 kt. Sunny. Seas 1 ft or less.
Wednesday Night
W wind 8 to 10 kt. Mostly 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: 40.91°N 73.39°W
Last Update: 1:15 pm EST Jan 24, 2026
Forecast Valid: 5pm EST Jan 24, 2026-6pm EST Jan 31, 2026
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