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

For More Weather Information:

New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Overnight

      Overnight:SW wind 9 to 14 kt. Partly cloudy. Seas 1 ft or less.

      SW 14kt
      < 1ft

    • Wednesday

      Wednesday:S wind 8 to 12 kt. A chance of showers, with thunderstorms also possible after 5pm. Seas 1 ft or less.

      S 12kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SSW wind 9 to 14 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

      SSW 14kt
      < 1ft

    • Thursday

      Thursday:WSW wind 7 to 10 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      WSW 10kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind 5 to 8 kt. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Seas 1 ft or less.

      W 8kt
      < 1ft

    • Friday

      Friday:W wind 5 to 10 kt becoming S in the afternoon. A chance of showers before 8am. Seas 1 ft or less.

      S 10kt
      < 1ft

    • Friday Night

      Friday Night:S wind 5 to 7 kt becoming W after midnight. A chance of showers and thunderstorms between 8pm and 2am. Seas 1 ft or less.

      S 7kt
      < 1ft

    • Saturday

      Saturday:NNW wind around 7 kt becoming W in the afternoon. Partly sunny. Seas 1 ft or less.

      WNW 7kt
      < 1ft

    • Saturday Night

      Saturday Night:WNW wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.

      WNW 6kt⇓
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 7:24 pm EDT Jun 9, 2026
Forecast Valid: 11pm EDT Jun 9, 2026-6pm EDT Jun 16, 2026

View Nearby Observations

Detailed Forecast


Overnight
SW wind 9 to 14 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
S wind 8 to 12 kt. A chance of showers, with thunderstorms also possible after 5pm. Seas 1 ft or less.
Wednesday Night
SSW wind 9 to 14 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Thursday
WSW wind 7 to 10 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Thursday Night
W wind 5 to 8 kt. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Seas 1 ft or less.
Friday
W wind 5 to 10 kt becoming S in the afternoon. A chance of showers before 8am. Seas 1 ft or less.
Friday Night
S wind 5 to 7 kt becoming W after midnight. A chance of showers and thunderstorms between 8pm and 2am. Seas 1 ft or less.
Saturday
NNW wind around 7 kt becoming W in the afternoon. Partly sunny. Seas 1 ft or less.
Saturday Night
WNW wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.

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: 40.62°N 73.59°W
Last Update: 7:24 pm EDT Jun 9, 2026
Forecast Valid: 11pm EDT Jun 9, 2026-6pm EDT Jun 16, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data