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

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:S wind 8 to 13 kt, with gusts as high as 21 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.

      S 13kt
      < 1ft

    • Tonight

      Tonight:SSE wind 12 to 14 kt, with gusts as high as 22 kt. Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Seas 1 ft or less.

      SSE 14kt
      < 1ft

    • Wednesday

      Wednesday:SE wind around 8 kt becoming SSW in the afternoon. Showers likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

      SE 8kt
      < 1ft

    • Wednesday Night

      Wednesday Night:N wind around 10 kt becoming NNW in the evening. Showers and thunderstorms likely. Seas 1 ft or less.

      N 10kt
      < 1ft

    • Thursday

      Thursday:NNW wind 9 to 11 kt. Showers likely, with thunderstorms also possible after 2pm. Seas 1 ft or less.

      NNW 11kt
      < 1ft

    • Thursday Night

      Thursday Night:N wind 8 to 10 kt. Mostly cloudy. Seas 1 ft or less.

      N 10kt
      < 1ft

    • Friday

      Friday:N wind 5 to 9 kt. Mostly sunny. Seas 1 ft or less.

      N 9kt
      < 1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Saturday

      Saturday:Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

      Light Wind
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:31 am EDT Jul 28, 2026
Forecast Valid: 9am EDT Jul 28, 2026-6pm EDT Aug 3, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH

Today
S wind 8 to 13 kt, with gusts as high as 21 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Seas 1 ft or less.
Tonight
SSE wind 12 to 14 kt, with gusts as high as 22 kt. Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Seas 1 ft or less.
Wednesday
SE wind around 8 kt becoming SSW in the afternoon. Showers likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Wednesday Night
N wind around 10 kt becoming NNW in the evening. Showers and thunderstorms likely. Seas 1 ft or less.
Thursday
NNW wind 9 to 11 kt. Showers likely, with thunderstorms also possible after 2pm. Seas 1 ft or less.
Thursday Night
N wind 8 to 10 kt. Mostly cloudy. Seas 1 ft or less.
Friday
N wind 5 to 9 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Saturday
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

*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: 40.91°N 73.39°W
Last Update: 2:31 am EDT Jul 28, 2026
Forecast Valid: 9am EDT Jul 28, 2026-6pm EDT Aug 3, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data