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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:S wind 7 to 9 kt. Sunny. Seas around 3 ft.

      S 9kt
      3ft

    • Tonight

      Tonight:SSW wind 6 to 9 kt becoming NW after midnight. Partly cloudy. Seas around 3 ft.

      WSW 9kt
      3ft

    • Friday

      Friday:WNW wind 8 to 11 kt becoming SSW 11 to 14 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.

      ⇑SSW 14kt
      2-3ft

    • Friday Night

      Friday Night:SSW wind 7 to 10 kt. Increasing clouds. Seas 2 to 3 ft.

      SSW 10kt
      2-3ft

    • Saturday

      Saturday:S wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Winds could gust as high as 26 kt. Showers, with thunderstorms also possible after 5pm. Seas 3 ft building to 5 ft.

      ⇑S 20kt
      Waves Building5ft

    • Saturday Night

      Saturday Night:SW wind 13 to 18 kt decreasing to 8 to 13 kt after midnight. Showers before 8pm. Seas around 4 ft.

      SW 18kt⇓
      4ft

    • Sunday

      Sunday:SW wind 6 to 11 kt. Partly sunny. Seas 3 to 4 ft.

      SW 11kt
      3-4ft

    • Sunday Night

      Sunday Night:SSW wind 6 to 9 kt becoming NE after midnight. Showers likely. Seas around 3 ft.

      NE 9kt
      3ft

    • Monday

      Monday:N wind around 11 kt. Showers. Seas around 3 ft.

      N 11kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 1:42 pm EDT May 7, 2026
Forecast Valid: 2pm EDT May 7, 2026-6pm EDT May 13, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
S wind 7 to 9 kt. Sunny. Seas around 3 ft.
Tonight
SSW wind 6 to 9 kt becoming NW after midnight. Partly cloudy. Seas around 3 ft.
Friday
WNW wind 8 to 11 kt becoming SSW 11 to 14 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.
Friday Night
SSW wind 7 to 10 kt. Increasing clouds. Seas 2 to 3 ft.
Saturday
S wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Winds could gust as high as 26 kt. Showers, with thunderstorms also possible after 5pm. Seas 3 ft building to 5 ft.
Saturday Night
SW wind 13 to 18 kt decreasing to 8 to 13 kt after midnight. Showers before 8pm. Seas around 4 ft.
Sunday
SW wind 6 to 11 kt. Partly sunny. Seas 3 to 4 ft.
Sunday Night
SSW wind 6 to 9 kt becoming NE after midnight. Showers likely. Seas around 3 ft.
Monday
N wind around 11 kt. Showers. Seas around 3 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: 40.53°N 73.44°W
Last Update: 1:42 pm EDT May 7, 2026
Forecast Valid: 2pm EDT May 7, 2026-6pm EDT May 13, 2026
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