For More Weather Information:

New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SSW wind 8 to 10 kt. Partly sunny. Seas around 2 ft.

      SSW 10kt
      2ft

    • Tonight

      Tonight:S wind around 14 kt. Mostly cloudy. Seas around 3 ft.

      S 14kt
      3ft

    • Thursday

      Thursday:SSW wind 17 to 20 kt. Partly sunny. Seas 3 to 4 ft.

      SSW 20kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday Night

      Thursday Night:SSW wind 22 to 25 kt decreasing to 19 to 22 kt after midnight. Rain, mainly after 2am.   Seas around 6 ft.

      SSW 25kt⇓
      6ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:WNW wind 12 to 15 kt becoming N in the afternoon. Rain, mainly before 8am.   Seas around 4 ft.

      WNW 15kt
      4ft

    • Friday Night

      Friday Night:N wind 11 to 16 kt. Mostly cloudy. Seas around 3 ft.

      N 16kt
      3ft

    • Saturday

      Saturday:N wind 12 to 15 kt becoming NW 9 to 12 kt in the afternoon. Sunny. Seas 2 to 3 ft.

      N 15kt⇓
      2-3ft

    • Saturday Night

      Saturday Night:WNW wind around 13 kt. Partly cloudy. Seas around 2 ft.

      WNW 13kt
      2ft

    • Sunday

      Sunday:WNW wind 12 to 15 kt becoming SW in the afternoon. Sunny. Seas around 2 ft.

      WNW 15kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 2:27 am EDT Mar 25, 2026
Forecast Valid: 1pm EDT Mar 25, 2026-6pm EDT Mar 31, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH

This Afternoon
SSW wind 8 to 10 kt. Partly sunny. Seas around 2 ft.
Tonight
S wind around 14 kt. Mostly cloudy. Seas around 3 ft.
Thursday
SSW wind 17 to 20 kt. Partly sunny. Seas 3 to 4 ft.
Thursday Night
SSW wind 22 to 25 kt decreasing to 19 to 22 kt after midnight. Rain, mainly after 2am. Seas around 6 ft.
Friday
WNW wind 12 to 15 kt becoming N in the afternoon. Rain, mainly before 8am. Seas around 4 ft.
Friday Night
N wind 11 to 16 kt. Mostly cloudy. Seas around 3 ft.
Saturday
N wind 12 to 15 kt becoming NW 9 to 12 kt in the afternoon. Sunny. Seas 2 to 3 ft.
Saturday Night
WNW wind around 13 kt. Partly cloudy. Seas around 2 ft.
Sunday
WNW wind 12 to 15 kt becoming SW in the afternoon. Sunny. 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: 2:27 am EDT Mar 25, 2026
Forecast Valid: 1pm EDT Mar 25, 2026-6pm EDT Mar 31, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data