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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:WNW wind around 6 kt. Showers before 11am, then showers and possibly a thunderstorm between 11am and 2pm, then a chance of showers after 2pm.   Seas around 3 ft.

      WNW 6kt
      3ft

    • Tonight

      Tonight:WNW wind around 10 kt. A slight chance of showers before 5am.   Seas around 3 ft.

      WNW 10kt
      3ft

    • Friday

      Friday:WNW wind 7 to 10 kt becoming W in the afternoon. A slight chance of showers between 8am and 11am.   Seas around 4 ft.

      WNW 10kt
      4ft

    • Friday Night

      Friday Night:NW wind 5 to 7 kt becoming SW after midnight. Partly cloudy. Seas around 4 ft.

      W 7kt
      4ft

    • Saturday

      Saturday:WSW wind 6 to 9 kt becoming S 11 to 16 kt in the afternoon. Sunny. Seas 3 to 4 ft.

      ⇑S 16kt
      3-4ft

    • Saturday Night

      Saturday Night:SSW wind 15 to 18 kt decreasing to 10 to 13 kt after midnight. Partly cloudy. Seas 4 to 5 ft.

      SSW 18kt⇓
      4-5ft

    • Sunday

      Sunday:SW wind 9 to 12 kt. Mostly sunny. Seas 3 to 4 ft.

      SW 12kt
      3-4ft

    • Sunday Night

      Sunday Night:WSW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 3 to 4 ft.

      WSW 8kt⇓
      3-4ft

    • Monday

      Monday:Variable winds less than 5 kt becoming ESE 5 to 10 kt in the morning. Mostly sunny. Seas around 3 ft.

      ⇑ESE 10kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 6:45 am EDT May 14, 2026
Forecast Valid: 10am EDT May 14, 2026-6pm EDT May 20, 2026

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Detailed Forecast


Today
WNW wind around 6 kt. Showers before 11am, then showers and possibly a thunderstorm between 11am and 2pm, then a chance of showers after 2pm. Seas around 3 ft.
Tonight
WNW wind around 10 kt. A slight chance of showers before 5am. Seas around 3 ft.
Friday
WNW wind 7 to 10 kt becoming W in the afternoon. A slight chance of showers between 8am and 11am. Seas around 4 ft.
Friday Night
NW wind 5 to 7 kt becoming SW after midnight. Partly cloudy. Seas around 4 ft.
Saturday
WSW wind 6 to 9 kt becoming S 11 to 16 kt in the afternoon. Sunny. Seas 3 to 4 ft.
Saturday Night
SSW wind 15 to 18 kt decreasing to 10 to 13 kt after midnight. Partly cloudy. Seas 4 to 5 ft.
Sunday
SW wind 9 to 12 kt. Mostly sunny. Seas 3 to 4 ft.
Sunday Night
WSW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 3 to 4 ft.
Monday
Variable winds less than 5 kt becoming ESE 5 to 10 kt in the morning. Mostly sunny. 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: 6:45 am EDT May 14, 2026
Forecast Valid: 10am EDT May 14, 2026-6pm EDT May 20, 2026
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