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]

    • 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.
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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
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