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

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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

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

      S 6kt⇓
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. A chance of showers, mainly after 2pm. Seas 1 ft or less.

      ⇑S 10kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind around 17 kt. A chance of rain before 11pm, then a chance of rain and thunderstorms between 11pm and 2am, then a chance of rain after 2am. Seas 1 ft or less.

      S 17kt
      < 1ft

    • Thursday

      Thursday:WNW wind 17 to 19 kt. Rain likely before 5pm, then a chance of rain and snow. Seas around 1 ft.

      WNW 19kt
      1ft

    • Thursday Night

      Thursday Night:WNW wind 12 to 15 kt decreasing to 9 to 12 kt after midnight. A chance of rain and snow before 8pm. Seas 1 ft or less.

      WNW 15kt⇓
      < 1ft

    • Friday

      Friday:WSW wind 6 to 9 kt becoming S 15 to 20 kt. Partly sunny. Seas 1 ft or less.

      ⇑S 20kt
      < 1ft

    • Friday Night

      Friday Night:S wind 22 to 26 kt becoming WSW after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas 1 ft or less.

      S 26kt
      < 1ft

    • Saturday

      Saturday:W wind 17 to 20 kt. Sunny. Seas around 1 ft.

      W 20kt
      1ft

    • Saturday Night

      Saturday Night:NW wind 6 to 9 kt becoming NE after midnight. Mostly cloudy. Seas 1 ft or less.

      NW 9kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 7:07 pm EDT Mar 10, 2026
Forecast Valid: 7pm EDT Mar 10, 2026-6pm EDT Mar 17, 2026

View Nearby Observations

Detailed Forecast


Tonight
S wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. A chance of showers, mainly after 2pm. Seas 1 ft or less.
Wednesday Night
S wind around 17 kt. A chance of rain before 11pm, then a chance of rain and thunderstorms between 11pm and 2am, then a chance of rain after 2am. Seas 1 ft or less.
Thursday
WNW wind 17 to 19 kt. Rain likely before 5pm, then a chance of rain and snow. Seas around 1 ft.
Thursday Night
WNW wind 12 to 15 kt decreasing to 9 to 12 kt after midnight. A chance of rain and snow before 8pm. Seas 1 ft or less.
Friday
WSW wind 6 to 9 kt becoming S 15 to 20 kt. Partly sunny. Seas 1 ft or less.
Friday Night
S wind 22 to 26 kt becoming WSW after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas 1 ft or less.
Saturday
W wind 17 to 20 kt. Sunny. Seas around 1 ft.
Saturday Night
NW wind 6 to 9 kt becoming NE after midnight. Mostly cloudy. 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: 7:07 pm EDT Mar 10, 2026
Forecast Valid: 7pm EDT Mar 10, 2026-6pm EDT Mar 17, 2026
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