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:Variable winds less than 5 kt becoming SSW around 6 kt in the evening. Mostly clear. Seas 1 ft or less.

      ⇑SSW 6kt
      < 1ft

    • Sunday

      Sunday:WSW wind 5 to 9 kt. A chance of showers, mainly after 5pm. Seas around 1 ft.

      WSW 9kt
      1ft

    • Sunday Night

      Sunday Night:SW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Showers and thunderstorms likely before 2am, then a chance of showers. Seas 1 ft or less.

      SW 8kt⇓
      < 1ft

    • Monday

      Monday:Variable winds 5 kt or less. A slight chance of showers before 8am. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Tuesday Night

      Tuesday Night:SSE wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Seas 1 ft or less.

      SSE 6kt⇓
      < 1ft

    • Wednesday

      Wednesday:NE wind around 6 kt becoming E in the afternoon. A chance of showers. Seas around 1 ft.

      ENE 6kt
      1ft

    • Wednesday Night

      Wednesday Night:ESE wind around 6 kt becoming S after midnight. Showers likely. Seas around 1 ft.

      ESE 6kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 2:24 pm EDT Aug 29, 2026
Forecast Valid: 7pm EDT Aug 29, 2026-6pm EDT Sep 5, 2026

View Nearby Observations

Detailed Forecast


Tonight
Variable winds less than 5 kt becoming SSW around 6 kt in the evening. Mostly clear. Seas 1 ft or less.
Sunday
WSW wind 5 to 9 kt. A chance of showers, mainly after 5pm. Seas around 1 ft.
Sunday Night
SW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Showers and thunderstorms likely before 2am, then a chance of showers. Seas 1 ft or less.
Monday
Variable winds 5 kt or less. A slight chance of showers before 8am. Seas 1 ft or less.
Monday Night
Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.
Tuesday
Variable winds 5 kt or less. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Tuesday Night
SSE wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Seas 1 ft or less.
Wednesday
NE wind around 6 kt becoming E in the afternoon. A chance of showers. Seas around 1 ft.
Wednesday Night
ESE wind around 6 kt becoming S after midnight. Showers likely. Seas around 1 ft.

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: 2:24 pm EDT Aug 29, 2026
Forecast Valid: 7pm EDT Aug 29, 2026-6pm EDT Sep 5, 2026
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