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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:SSW wind 8 to 12 kt becoming W after midnight. A slight chance of showers after 11pm.   Seas 2 to 3 ft.

      SSW 12kt
      2-3ft

    • Tuesday

      Tuesday:WNW wind 13 to 16 kt. A slight chance of showers after 2pm.   Seas 3 to 4 ft.

      WNW 16kt
      3-4ft

    • Tuesday Night

      Tuesday Night:NW wind 15 to 18 kt becoming N after midnight. Mostly clear. Seas around 3 ft.

      NW 18kt
      3ft

    • Wednesday

      Wednesday:NNE wind 8 to 13 kt becoming ESE in the afternoon. Sunny. Seas around 2 ft.

      NNE 13kt
      2ft

    • Wednesday Night

      Wednesday Night:SE wind 6 to 8 kt. Mostly clear. Seas around 2 ft.

      SE 8kt
      2ft

    • Thursday

      Thursday:ESE wind 8 to 10 kt. Mostly sunny. Seas around 2 ft.

      ESE 10kt
      2ft

    • Thursday Night

      Thursday Night:SE wind 5 to 10 kt. Partly cloudy. Seas 2 to 3 ft.

      SE 10kt
      2-3ft

    • Friday

      Friday:Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Seas 3 to 4 ft.

      ⇑S 8kt
      3-4ft

    • Friday Night

      Friday Night:S wind around 12 kt becoming SW after midnight. Partly cloudy. Seas around 4 ft.

      S 12kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 2:19 pm EDT Apr 6, 2026
Forecast Valid: 4pm EDT Apr 6, 2026-6pm EDT Apr 13, 2026

View Nearby Observations

Detailed Forecast


Tonight
SSW wind 8 to 12 kt becoming W after midnight. A slight chance of showers after 11pm. Seas 2 to 3 ft.
Tuesday
WNW wind 13 to 16 kt. A slight chance of showers after 2pm. Seas 3 to 4 ft.
Tuesday Night
NW wind 15 to 18 kt becoming N after midnight. Mostly clear. Seas around 3 ft.
Wednesday
NNE wind 8 to 13 kt becoming ESE in the afternoon. Sunny. Seas around 2 ft.
Wednesday Night
SE wind 6 to 8 kt. Mostly clear. Seas around 2 ft.
Thursday
ESE wind 8 to 10 kt. Mostly sunny. Seas around 2 ft.
Thursday Night
SE wind 5 to 10 kt. Partly cloudy. Seas 2 to 3 ft.
Friday
Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Seas 3 to 4 ft.
Friday Night
S wind around 12 kt becoming SW after midnight. Partly cloudy. Seas around 4 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: 2:19 pm EDT Apr 6, 2026
Forecast Valid: 4pm EDT Apr 6, 2026-6pm EDT Apr 13, 2026
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