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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:ENE wind 13 to 18 kt increasing to 24 to 29 kt. Snow before 1pm, then snow and sleet. The snow could be heavy at times. Seas 2 ft building to 6 ft.

      ⇑ENE 29kt
      Waves Building6ft

      Gale Warning
      Gale Warning

    • Tonight

      Tonight:ENE wind 24 to 29 kt becoming NNE 15 to 20 kt. Winds could gust as high as 35 kt. Rain and sleet before 1am, then a chance of sleet. Seas around 8 ft.

      ENE 29kt⇓
      8ft

      Gale Warning
      Gale Warning

    • Monday

      Monday:NNE wind 11 to 16 kt becoming WNW 18 to 23 kt. A chance of snow and sleet before 7am, then a chance of snow between 7am and 1pm. Seas around 7 ft.

      ⇑WNW 23kt
      7ft

    • Monday Night

      Monday Night:WNW wind 23 to 25 kt, with gusts as high as 33 kt. Partly cloudy. Seas 6 to 7 ft.

      WNW 25kt
      6-7ft

    • Tuesday

      Tuesday:W wind 19 to 23 kt. Mostly sunny. Seas around 5 ft.

      W 23kt
      5ft

    • Tuesday Night

      Tuesday Night:WNW wind 20 to 23 kt. Partly cloudy. Seas 4 to 5 ft.

      WNW 23kt
      4-5ft

    • Wednesday

      Wednesday:WNW wind 14 to 18 kt. Mostly sunny. Seas 3 to 4 ft.

      WNW 18kt
      3-4ft

    • Wednesday Night

      Wednesday Night:W wind 13 to 15 kt becoming NW after midnight. Mostly cloudy. Seas around 2 ft.

      NW 15kt
      2ft

    • Thursday

      Thursday:NW wind 16 to 19 kt increasing to 19 to 22 kt in the afternoon. Partly sunny. Seas 2 to 3 ft.

      ⇑NW 22kt
      2-3ft


Associated Zone Forecast which includes this point

Last Update: 5:25 am EST Jan 25, 2026
Forecast Valid: 6am EST Jan 25, 2026-6pm EST Jan 31, 2026

View Nearby Observations

Detailed Forecast

...GALE WARNING IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH

Today
ENE wind 13 to 18 kt increasing to 24 to 29 kt. Snow before 1pm, then snow and sleet. The snow could be heavy at times. Seas 2 ft building to 6 ft.
Tonight
ENE wind 24 to 29 kt becoming NNE 15 to 20 kt. Winds could gust as high as 35 kt. Rain and sleet before 1am, then a chance of sleet. Seas around 8 ft.
Monday
NNE wind 11 to 16 kt becoming WNW 18 to 23 kt. A chance of snow and sleet before 7am, then a chance of snow between 7am and 1pm. Seas around 7 ft.
Monday Night
WNW wind 23 to 25 kt, with gusts as high as 33 kt. Partly cloudy. Seas 6 to 7 ft.
Tuesday
W wind 19 to 23 kt. Mostly sunny. Seas around 5 ft.
Tuesday Night
WNW wind 20 to 23 kt. Partly cloudy. Seas 4 to 5 ft.
Wednesday
WNW wind 14 to 18 kt. Mostly sunny. Seas 3 to 4 ft.
Wednesday Night
W wind 13 to 15 kt becoming NW after midnight. Mostly cloudy. Seas around 2 ft.
Thursday
NW wind 16 to 19 kt increasing to 19 to 22 kt in the afternoon. Partly sunny. 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: 5:25 am EST Jan 25, 2026
Forecast Valid: 6am EST Jan 25, 2026-6pm EST Jan 31, 2026
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