For More Weather Information:

New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:W wind around 19 kt. Mostly sunny. Seas around 4 ft.

      W 19kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:SSW wind around 18 kt. A chance of snow, mainly after 4am.   Seas around 4 ft.

      SSW 18kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday

      Saturday:SSW wind around 16 kt becoming WSW in the afternoon. A chance of rain and snow before 10am, then rain likely.   Seas around 5 ft.

      SSW 16kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday Night

      Saturday Night:W wind 7 to 12 kt. A chance of rain before 4am, then a chance of rain and snow.   Seas 4 to 5 ft.

      W 12kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Sunday

      Sunday:W wind 8 to 13 kt becoming NW in the afternoon. Rain and snow likely, becoming all snow after 10am.   Seas around 4 ft.

      NW 13kt
      4ft

    • Sunday Night

      Sunday Night:WNW wind 15 to 17 kt. A chance of snow before 1am.   Seas around 4 ft.

      WNW 17kt
      4ft

    • M.L.King Day

      M.L.King Day:WSW wind 18 to 21 kt increasing to 22 to 25 kt in the afternoon. Sunny. Seas 4 to 5 ft.

      ⇑WSW 25kt
      4-5ft

    • Monday Night

      Monday Night:W wind 28 to 30 kt. Partly cloudy. Seas around 6 ft.

      W 30kt
      6ft

    • Tuesday

      Tuesday:W wind 22 to 25 kt. Mostly sunny. Seas 5 to 6 ft.

      W 25kt
      5-6ft


Associated Zone Forecast which includes this point

Last Update: 12:47 pm EST Jan 16, 2026
Forecast Valid: 3pm EST Jan 16, 2026-6pm EST Jan 23, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SATURDAY NIGHT...

This Afternoon
W wind around 19 kt. Mostly sunny. Seas around 4 ft.
Tonight
SSW wind around 18 kt. A chance of snow, mainly after 4am. Seas around 4 ft.
Saturday
SSW wind around 16 kt becoming WSW in the afternoon. A chance of rain and snow before 10am, then rain likely. Seas around 5 ft.
Saturday Night
W wind 7 to 12 kt. A chance of rain before 4am, then a chance of rain and snow. Seas 4 to 5 ft.
Sunday
W wind 8 to 13 kt becoming NW in the afternoon. Rain and snow likely, becoming all snow after 10am. Seas around 4 ft.
Sunday Night
WNW wind 15 to 17 kt. A chance of snow before 1am. Seas around 4 ft.
M.L.King Day
WSW wind 18 to 21 kt increasing to 22 to 25 kt in the afternoon. Sunny. Seas 4 to 5 ft.
Monday Night
W wind 28 to 30 kt. Partly cloudy. Seas around 6 ft.
Tuesday
W wind 22 to 25 kt. Mostly sunny. Seas 5 to 6 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...

ABOUT THIS FORECAST

Point Forecast: 40.53°N 73.44°W
Last Update: 12:47 pm EST Jan 16, 2026
Forecast Valid: 3pm EST Jan 16, 2026-6pm EST Jan 23, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data