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New York, NY Local Forecast Office

9NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:NE wind 8 to 11 kt. Sunny. Seas 1 ft or less.

      NE 11kt
      < 1ft

    • Tonight

      Tonight:NNE wind 8 to 13 kt, with gusts as high as 20 kt. Increasing clouds. Seas 1 ft or less.

      NNE 13kt
      < 1ft

    • Tuesday

      Tuesday:NNE wind 14 to 16 kt, with gusts as high as 24 kt. Mostly cloudy. Seas 1 ft or less.

      NNE 16kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NNE wind 12 to 16 kt, with gusts as high as 24 kt. Partly cloudy. Seas 1 ft or less.

      NNE 16kt
      < 1ft

    • Wednesday

      Wednesday:NNE wind 13 to 17 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 1 ft.

      NNE 17kt
      1ft

    • Wednesday Night

      Wednesday Night:N wind around 14 kt. Partly cloudy. Seas 1 ft or less.

      N 14kt
      < 1ft

    • Thursday

      Thursday:N wind around 12 kt. Sunny. Seas 1 ft or less.

      N 12kt
      < 1ft

    • Thursday Night

      Thursday Night:N wind 10 to 14 kt, with gusts as high as 20 kt. Clear. Seas 1 ft or less.

      N 14kt
      < 1ft

    • Friday

      Friday:NNE wind 11 to 14 kt. Sunny. Seas 1 ft or less.

      NNE 14kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 5:21 am EDT Oct 19, 2026
Forecast Valid: 6am EDT Oct 19, 2026-6pm EDT Oct 25, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH

Today
NE wind 8 to 11 kt. Sunny. Seas 1 ft or less.
Tonight
NNE wind 8 to 13 kt, with gusts as high as 20 kt. Increasing clouds. Seas 1 ft or less.
Tuesday
NNE wind 14 to 16 kt, with gusts as high as 24 kt. Mostly cloudy. Seas 1 ft or less.
Tuesday Night
NNE wind 12 to 16 kt, with gusts as high as 24 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
NNE wind 13 to 17 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 1 ft.
Wednesday Night
N wind around 14 kt. Partly cloudy. Seas 1 ft or less.
Thursday
N wind around 12 kt. Sunny. Seas 1 ft or less.
Thursday Night
N wind 10 to 14 kt, with gusts as high as 20 kt. Clear. Seas 1 ft or less.
Friday
NNE wind 11 to 14 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: 40.64°N 73.38°W
Last Update: 5:21 am EDT Oct 19, 2026
Forecast Valid: 6am EDT Oct 19, 2026-6pm EDT Oct 25, 2026
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