Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:Variable winds less than 5 kt becoming S 5 to 9 kt after midnight. A slight chance of showers and thunderstorms between 8pm and 11pm.   Seas 1 ft or less.

      ⇑S 9kt
      < 1ft

    • Saturday

      Saturday:NE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas around 1 ft.

      NE 8kt⇓
      1ft

    • Saturday Night

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

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming S 7 to 12 kt in the morning. A chance of showers after 2pm.   Seas 1 ft or less.

      ⇑S 12kt
      < 1ft

    • Sunday Night

      Sunday Night:S wind 13 to 15 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm.   Seas 1 to 2 ft.

      S 15kt
      1-2ft

    • Monday

      Monday:W wind 7 to 9 kt becoming NNW in the afternoon. Partly sunny. Seas around 1 ft.

      W 9kt
      1ft

    • Monday Night

      Monday Night:N wind around 6 kt. Partly cloudy. Seas around 1 ft.

      N 6kt
      1ft

    • Tuesday

      Tuesday:N wind around 6 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.

      N 6kt⇓
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Light Wind
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:22 pm EDT Aug 14, 2026
Forecast Valid: 6pm EDT Aug 14, 2026-6pm EDT Aug 21, 2026

View Nearby Observations

Detailed Forecast


Tonight
Variable winds less than 5 kt becoming S 5 to 9 kt after midnight. A slight chance of showers and thunderstorms between 8pm and 11pm. Seas 1 ft or less.
Saturday
NE wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas around 1 ft.
Saturday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming S 7 to 12 kt in the morning. A chance of showers after 2pm. Seas 1 ft or less.
Sunday Night
S wind 13 to 15 kt, with gusts as high as 23 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Seas 1 to 2 ft.
Monday
W wind 7 to 9 kt becoming NNW in the afternoon. Partly sunny. Seas around 1 ft.
Monday Night
N wind around 6 kt. Partly cloudy. Seas around 1 ft.
Tuesday
N wind around 6 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. 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...

ABOUT THIS FORECAST

Point Forecast: 40.91°N 73.39°W
Last Update: 2:22 pm EDT Aug 14, 2026
Forecast Valid: 6pm EDT Aug 14, 2026-6pm EDT Aug 21, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data