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]

    • Today

      Today:SSW wind 14 to 19 kt. Sunny. Seas 3 to 4 ft.

      SSW 19kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:SW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. Winds could gust as high as 30 kt. A slight chance of showers and thunderstorms before 2am. Seas 6 ft subsiding to 4 ft.

      SW 24kt⇓
      6ftWaves Subsiding

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:SSW wind 11 to 16 kt. Sunny. Seas 3 to 4 ft.

      SSW 16kt
      3-4ft

    • Thursday Night

      Thursday Night:SSW wind 16 to 19 kt becoming WSW 10 to 13 kt after midnight. Mostly clear. Seas 3 to 4 ft.

      SSW 19kt⇓
      3-4ft

    • Friday

      Friday:W wind 7 to 10 kt becoming SW 11 to 14 kt in the afternoon. Sunny. Seas 2 to 3 ft.

      ⇑SW 14kt
      2-3ft

    • Friday Night

      Friday Night:WSW wind 5 to 9 kt becoming WNW in the evening. Partly cloudy. Seas around 2 ft.

      WSW 9kt
      2ft

    • Independence Day

      Independence Day:Variable winds less than 5 kt becoming SSW 8 to 13 kt in the morning. A chance of showers after 2pm. Seas around 2 ft.

      ⇑SSW 13kt
      2ft

    • Saturday Night

      Saturday Night:S wind 5 to 9 kt becoming W after midnight. A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Seas around 2 ft.

      S 9kt
      2ft

    • Sunday

      Sunday:WNW wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. A chance of showers. Seas around 2 ft.

      ⇑S 11kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 2:37 am EDT Jul 1, 2026
Forecast Valid: 9am EDT Jul 1, 2026-6pm EDT Jul 7, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING

Today
SSW wind 14 to 19 kt. Sunny. Seas 3 to 4 ft.
Tonight
SW wind 21 to 24 kt decreasing to 16 to 19 kt after midnight. Winds could gust as high as 30 kt. A slight chance of showers and thunderstorms before 2am. Seas 6 ft subsiding to 4 ft.
Thursday
SSW wind 11 to 16 kt. Sunny. Seas 3 to 4 ft.
Thursday Night
SSW wind 16 to 19 kt becoming WSW 10 to 13 kt after midnight. Mostly clear. Seas 3 to 4 ft.
Friday
W wind 7 to 10 kt becoming SW 11 to 14 kt in the afternoon. Sunny. Seas 2 to 3 ft.
Friday Night
WSW wind 5 to 9 kt becoming WNW in the evening. Partly cloudy. Seas around 2 ft.
Independence Day
Variable winds less than 5 kt becoming SSW 8 to 13 kt in the morning. A chance of showers after 2pm. Seas around 2 ft.
Saturday Night
S wind 5 to 9 kt becoming W after midnight. A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Seas around 2 ft.
Sunday
WNW wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. A chance of showers. 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...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 40.53°N 73.44°W
Last Update: 2:37 am EDT Jul 1, 2026
Forecast Valid: 9am EDT Jul 1, 2026-6pm EDT Jul 7, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data