Hazardous Weather Conditions

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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:ESE wind around 10 kt. Rain.   Seas 1 ft or less.

      ESE 10kt
      < 1ft

    • Tonight

      Tonight:SE wind 7 to 11 kt becoming NNE after midnight. Periods of rain and possibly a thunderstorm before 2am, then a chance of rain.   Seas 1 ft or less.

      NNE 11kt
      < 1ft

    • Monday

      Monday:NE wind 12 to 17 kt. A slight chance of rain before 8am.   Seas around 1 ft.

      NE 17kt
      1ft

    • Monday Night

      Monday Night:ENE wind 11 to 16 kt. A chance of showers after 2am.   Seas 1 ft or less.

      ENE 16kt
      < 1ft

    • Tuesday

      Tuesday:ENE wind 14 to 18 kt, with gusts as high as 24 kt. A chance of showers.   Seas around 1 ft.

      ENE 18kt
      1ft

    • Tuesday Night

      Tuesday Night:ENE wind 18 to 20 kt, with gusts as high as 28 kt. Mostly cloudy. Seas around 1 ft.

      ENE 20kt
      1ft

    • Wednesday

      Wednesday:ENE wind around 20 kt, with gusts as high as 30 kt. Mostly cloudy. Seas around 1 ft.

      ENE 20kt
      1ft

    • Wednesday Night

      Wednesday Night:NE wind around 20 kt, with gusts as high as 31 kt. Mostly cloudy. Seas around 1 ft.

      NE 20kt
      1ft

    • Thursday

      Thursday:NE wind around 19 kt, with gusts as high as 30 kt. A chance of showers.   Seas around 1 ft.

      NE 19kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 3:41 am EDT Sep 20, 2026
Forecast Valid: 8am EDT Sep 20, 2026-6pm EDT Sep 26, 2026

View Nearby Observations

Detailed Forecast


Today
ESE wind around 10 kt. Rain. Seas 1 ft or less.
Tonight
SE wind 7 to 11 kt becoming NNE after midnight. Periods of rain and possibly a thunderstorm before 2am, then a chance of rain. Seas 1 ft or less.
Monday
NE wind 12 to 17 kt. A slight chance of rain before 8am. Seas around 1 ft.
Monday Night
ENE wind 11 to 16 kt. A chance of showers after 2am. Seas 1 ft or less.
Tuesday
ENE wind 14 to 18 kt, with gusts as high as 24 kt. A chance of showers. Seas around 1 ft.
Tuesday Night
ENE wind 18 to 20 kt, with gusts as high as 28 kt. Mostly cloudy. Seas around 1 ft.
Wednesday
ENE wind around 20 kt, with gusts as high as 30 kt. Mostly cloudy. Seas around 1 ft.
Wednesday Night
NE wind around 20 kt, with gusts as high as 31 kt. Mostly cloudy. Seas around 1 ft.
Thursday
NE wind around 19 kt, with gusts as high as 30 kt. A chance of showers. 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: 3:41 am EDT Sep 20, 2026
Forecast Valid: 8am EDT Sep 20, 2026-6pm EDT Sep 26, 2026
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