National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

For More Weather Information:

New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:WSW wind around 9 kt. Sunny. Seas around 2 ft.

      WSW 9kt
      2ft

    • Tonight

      Tonight:SW wind 8 to 13 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 3 ft.

      SW 13kt⇓
      3ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Mostly sunny. Seas around 2 ft.

      ⇑S 10kt
      2ft

    • Thursday Night

      Thursday Night:S wind 10 to 15 kt, with gusts as high as 21 kt. A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Seas around 3 ft.

      S 15kt
      3ft

    • Friday

      Friday:SSW wind around 9 kt. Showers likely and possibly a thunderstorm before 8am, then a slight chance of showers. Seas 2 to 3 ft.

      SSW 9kt
      2-3ft

    • Friday Night

      Friday Night:SSW wind 5 to 9 kt becoming WSW after midnight. Showers likely, mainly after 2am. Seas around 2 ft.

      SSW 9kt
      2ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. Showers likely, mainly before 8am. Seas around 2 ft.

      ⇑E 7kt
      2ft

    • Saturday Night

      Saturday Night:SSW wind around 6 kt becoming variable and less than 5 kt. Mostly cloudy. Seas around 2 ft.

      SSW 6kt⇓
      2ft

    • Sunday

      Sunday:N wind 5 to 7 kt becoming variable and less than 5 kt. Sunny. Seas around 2 ft.

      N 7kt⇓
      2ft


Associated Zone Forecast which includes this point

Last Update: 7:00 am EDT Jun 24, 2026
Forecast Valid: 12pm EDT Jun 24, 2026-6pm EDT Jun 30, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
WSW wind around 9 kt. Sunny. Seas around 2 ft.
Tonight
SW wind 8 to 13 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 3 ft.
Thursday
Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Mostly sunny. Seas around 2 ft.
Thursday Night
S wind 10 to 15 kt, with gusts as high as 21 kt. A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Seas around 3 ft.
Friday
SSW wind around 9 kt. Showers likely and possibly a thunderstorm before 8am, then a slight chance of showers. Seas 2 to 3 ft.
Friday Night
SSW wind 5 to 9 kt becoming WSW after midnight. Showers likely, mainly after 2am. Seas around 2 ft.
Saturday
Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. Showers likely, mainly before 8am. Seas around 2 ft.
Saturday Night
SSW wind around 6 kt becoming variable and less than 5 kt. Mostly cloudy. Seas around 2 ft.
Sunday
N wind 5 to 7 kt becoming variable and less than 5 kt. Sunny. Seas around 2 ft.

Winds and seas may be higher in and near tstms.

*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: 7:00 am EDT Jun 24, 2026
Forecast Valid: 12pm EDT Jun 24, 2026-6pm EDT Jun 30, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data