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

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:N wind around 11 kt. A chance of snow, mainly after 4am. Seas around 2 ft.

      N 11kt
      2ft

    • Sunday

      Sunday:NE wind 14 to 19 kt increasing to 23 to 28 kt. Snow before 1pm, then snow and sleet. The snow and sleet could be heavy at times. Seas 2 ft building to 5 ft.

      ⇑NE 28kt
      Waves Building5ft

      Gale Warning
      Gale Warning

    • Sunday Night

      Sunday Night:ENE wind 24 to 29 kt becoming NNE 18 to 23 kt after midnight. Winds could gust as high as 35 kt. Rain and sleet before 4am, then rain and snow likely. The rain and sleet could be heavy at times. Seas 7 to 8 ft.

      ENE 29kt⇓
      7-8ft

      Gale Warning
      Gale Warning

    • Monday

      Monday:N wind 13 to 18 kt becoming WNW 20 to 25 kt in the afternoon. Snow likely, mainly before 7am. Seas 7 to 8 ft.

      ⇑WNW 25kt
      7-8ft

    • Monday Night

      Monday Night:WNW wind around 28 kt. Partly cloudy. Seas 6 to 7 ft.

      WNW 28kt
      6-7ft

    • Tuesday

      Tuesday:W wind 20 to 25 kt, with gusts as high as 32 kt. Mostly sunny. Seas 5 to 6 ft.

      W 25kt
      5-6ft

    • Tuesday Night

      Tuesday Night:WNW wind 22 to 26 kt, with gusts as high as 32 kt. Partly cloudy. Seas 4 to 5 ft.

      WNW 26kt
      4-5ft

    • Wednesday

      Wednesday:WNW wind 16 to 19 kt. Mostly sunny. Seas 3 to 4 ft.

      WNW 19kt
      3-4ft

    • Wednesday Night

      Wednesday Night:WNW wind around 16 kt. Mostly cloudy. Seas 2 to 3 ft.

      WNW 16kt
      2-3ft


Associated Zone Forecast which includes this point

Last Update: 1:15 pm EST Jan 24, 2026
Forecast Valid: 9pm EST Jan 24, 2026-6pm EST Jan 31, 2026

View Nearby Observations

Detailed Forecast

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

Tonight
N wind around 11 kt. A chance of snow, mainly after 4am. Seas around 2 ft.
Sunday
NE wind 14 to 19 kt increasing to 23 to 28 kt. Snow before 1pm, then snow and sleet. The snow and sleet could be heavy at times. Seas 2 ft building to 5 ft.
Sunday Night
ENE wind 24 to 29 kt becoming NNE 18 to 23 kt after midnight. Winds could gust as high as 35 kt. Rain and sleet before 4am, then rain and snow likely. The rain and sleet could be heavy at times. Seas 7 to 8 ft.
Monday
N wind 13 to 18 kt becoming WNW 20 to 25 kt in the afternoon. Snow likely, mainly before 7am. Seas 7 to 8 ft.
Monday Night
WNW wind around 28 kt. Partly cloudy. Seas 6 to 7 ft.
Tuesday
W wind 20 to 25 kt, with gusts as high as 32 kt. Mostly sunny. Seas 5 to 6 ft.
Tuesday Night
WNW wind 22 to 26 kt, with gusts as high as 32 kt. Partly cloudy. Seas 4 to 5 ft.
Wednesday
WNW wind 16 to 19 kt. Mostly sunny. Seas 3 to 4 ft.
Wednesday Night
WNW wind around 16 kt. Mostly 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 40.53°N 73.44°W
Last Update: 1:15 pm EST Jan 24, 2026
Forecast Valid: 9pm EST Jan 24, 2026-6pm EST Jan 31, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data