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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Tuesday

      Tuesday:W wind 13 to 17 kt becoming SSW in the afternoon. Increasing clouds. Seas 2 to 3 ft.

      SSW 17kt
      2-3ft

    • Tuesday Night

      Tuesday Night:SW wind 17 to 21 kt. A slight chance of showers after 1am.   Seas 4 to 5 ft.

      SW 21kt
      4-5ft

    • Wednesday

      Wednesday:SW wind 12 to 15 kt decreasing to 9 to 12 kt in the afternoon. Cloudy. Seas 4 to 5 ft.

      SW 15kt⇓
      4-5ft

    • Wednesday Night

      Wednesday Night:SSW wind 8 to 12 kt becoming W after midnight. A chance of rain.   Seas around 3 ft.

      W 12kt
      3ft

    • Thursday

      Thursday:W wind 16 to 20 kt. A slight chance of rain before 10am, then a slight chance of snow between 10am and 1pm.   Seas around 4 ft.

      W 20kt
      4ft

    • Thursday Night

      Thursday Night:WNW wind 19 to 21 kt. Partly cloudy. Seas 3 to 4 ft.

      WNW 21kt
      3-4ft

    • Friday

      Friday:WNW wind 16 to 19 kt becoming SW in the afternoon. Mostly sunny. Seas 3 to 4 ft.

      SW 19kt
      3-4ft

    • Friday Night

      Friday Night:SW wind 20 to 23 kt. Mostly cloudy. Seas 4 to 5 ft.

      SW 23kt
      4-5ft

    • Saturday

      Saturday:SW wind around 17 kt. Partly sunny. Seas 4 to 5 ft.

      SW 17kt
      4-5ft


Associated Zone Forecast which includes this point

Last Update: 1:18 am EST Jan 13, 2026
Forecast Valid: 2am EST Jan 13, 2026-6pm EST Jan 19, 2026

View Nearby Observations

Detailed Forecast


Tuesday
W wind 13 to 17 kt becoming SSW in the afternoon. Increasing clouds. Seas 2 to 3 ft.
Tuesday Night
SW wind 17 to 21 kt. A slight chance of showers after 1am. Seas 4 to 5 ft.
Wednesday
SW wind 12 to 15 kt decreasing to 9 to 12 kt in the afternoon. Cloudy. Seas 4 to 5 ft.
Wednesday Night
SSW wind 8 to 12 kt becoming W after midnight. A chance of rain. Seas around 3 ft.
Thursday
W wind 16 to 20 kt. A slight chance of rain before 10am, then a slight chance of snow between 10am and 1pm. Seas around 4 ft.
Thursday Night
WNW wind 19 to 21 kt. Partly cloudy. Seas 3 to 4 ft.
Friday
WNW wind 16 to 19 kt becoming SW in the afternoon. Mostly sunny. Seas 3 to 4 ft.
Friday Night
SW wind 20 to 23 kt. Mostly cloudy. Seas 4 to 5 ft.
Saturday
SW wind around 17 kt. Partly sunny. Seas 4 to 5 ft.

*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: 40.53°N 73.44°W
Last Update: 1:18 am EST Jan 13, 2026
Forecast Valid: 2am EST Jan 13, 2026-6pm EST Jan 19, 2026
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