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Hazardous Weather Conditions

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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Friday

      Friday:NNE wind 10 to 13 kt decreasing to 7 to 10 kt in the afternoon. Winds could gust as high as 20 kt. A chance of showers, mainly before 2pm. Seas 1 ft or less.

      NNE 13kt⇓
      < 1ft

    • Friday Night

      Friday Night:NE wind around 7 kt. A slight chance of showers before 8pm. Seas 1 ft or less.

      NE 7kt
      < 1ft

    • Saturday

      Saturday:NE wind around 8 kt becoming E in the afternoon. Showers likely, mainly after 2pm. Seas 1 ft or less.

      NE 8kt
      < 1ft

    • Saturday Night

      Saturday Night:E wind around 6 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.

      E 6kt⇓
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      ⇑SSW 6kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind around 6 kt becoming W after midnight. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

      SW 6kt
      < 1ft

    • Monday

      Monday:W wind 6 to 8 kt. Sunny. Seas 1 ft or less.

      W 8kt
      < 1ft

    • Monday Night

      Monday Night:W wind around 7 kt. Mostly clear. Seas 1 ft or less.

      W 7kt
      < 1ft

    • Tuesday

      Tuesday:W wind around 7 kt. Sunny. Seas 1 ft or less.

      W 7kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 9:38 pm EDT Aug 20, 2026
Forecast Valid: 1am EDT Aug 21, 2026-6pm EDT Aug 27, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY...

Friday
NNE wind 10 to 13 kt decreasing to 7 to 10 kt in the afternoon. Winds could gust as high as 20 kt. A chance of showers, mainly before 2pm. Seas 1 ft or less.
Friday Night
NE wind around 7 kt. A slight chance of showers before 8pm. Seas 1 ft or less.
Saturday
NE wind around 8 kt becoming E in the afternoon. Showers likely, mainly after 2pm. Seas 1 ft or less.
Saturday Night
E wind around 6 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Sunday Night
SW wind around 6 kt becoming W after midnight. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.
Monday
W wind 6 to 8 kt. Sunny. Seas 1 ft or less.
Monday Night
W wind around 7 kt. Mostly clear. Seas 1 ft or less.
Tuesday
W wind around 7 kt. 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.
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ABOUT THIS FORECAST

Point Forecast: 40.91°N 73.39°W
Last Update: 9:38 pm EDT Aug 20, 2026
Forecast Valid: 1am EDT Aug 21, 2026-6pm EDT Aug 27, 2026
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