For More Weather Information:

New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:ENE wind 5 to 7 kt becoming S in the afternoon. Sunny. Seas around 1 ft.

      S 7kt
      1ft

    • Tonight

      Tonight:S wind 12 to 16 kt, with gusts as high as 22 kt. Showers likely, mainly after 2am.   Seas 2 to 3 ft.

      S 16kt
      2-3ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:SSE wind 12 to 17 kt, with gusts as high as 25 kt. Showers likely, mainly before 2pm.   Seas 3 to 4 ft.

      SSE 17kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:NE wind 5 to 8 kt. A slight chance of showers before 8pm.   Seas around 3 ft.

      NE 8kt
      3ft

    • Thursday

      Thursday:NNW wind 5 to 9 kt becoming WSW in the afternoon. Mostly sunny. Seas around 2 ft.

      WSW 9kt
      2ft

    • Thursday Night

      Thursday Night:WNW wind 7 to 10 kt becoming N after midnight. Partly cloudy. Seas 2 to 3 ft.

      WNW 10kt
      2-3ft

    • Friday

      Friday:NNE wind 6 to 9 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.

      S 9kt
      2ft

    • Friday Night

      Friday Night:SSE wind around 10 kt becoming ESE after midnight. A chance of showers.   Seas around 2 ft.

      SSE 10kt
      2ft

    • Saturday

      Saturday:E wind 13 to 15 kt. Showers likely.   Seas around 2 ft.

      E 15kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 6:12 am EDT Apr 21, 2026
Forecast Valid: 11am EDT Apr 21, 2026-6pm EDT Apr 27, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH

Today
ENE wind 5 to 7 kt becoming S in the afternoon. Sunny. Seas around 1 ft.
Tonight
S wind 12 to 16 kt, with gusts as high as 22 kt. Showers likely, mainly after 2am. Seas 2 to 3 ft.
Wednesday
SSE wind 12 to 17 kt, with gusts as high as 25 kt. Showers likely, mainly before 2pm. Seas 3 to 4 ft.
Wednesday Night
NE wind 5 to 8 kt. A slight chance of showers before 8pm. Seas around 3 ft.
Thursday
NNW wind 5 to 9 kt becoming WSW in the afternoon. Mostly sunny. Seas around 2 ft.
Thursday Night
WNW wind 7 to 10 kt becoming N after midnight. Partly cloudy. Seas 2 to 3 ft.
Friday
NNE wind 6 to 9 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.
Friday Night
SSE wind around 10 kt becoming ESE after midnight. A chance of showers. Seas around 2 ft.
Saturday
E wind 13 to 15 kt. Showers likely. Seas around 2 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: 6:12 am EDT Apr 21, 2026
Forecast Valid: 11am EDT Apr 21, 2026-6pm EDT Apr 27, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data