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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:SW wind around 12 kt. A chance of thunderstorms after 5pm. Seas 3 to 4 ft.

      SW 12kt
      3-4ft

    • Tonight

      Tonight:W wind 8 to 10 kt. A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Seas around 3 ft.

      W 10kt
      3ft

    • Friday

      Friday:W wind 7 to 11 kt becoming SSW in the afternoon. A chance of showers and thunderstorms after 5pm. Seas around 2 ft.

      SSW 11kt
      2ft

    • Friday Night

      Friday Night:SW wind around 11 kt becoming NW after midnight. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am. Seas around 2 ft.

      WNW 11kt
      2ft

    • Saturday

      Saturday:NW wind around 9 kt becoming W in the afternoon. Sunny. Seas around 2 ft.

      NW 9kt
      2ft

    • Saturday Night

      Saturday Night:SW wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 2 ft.

      SW 10kt⇓
      2ft

    • Sunday

      Sunday:S wind 5 to 10 kt increasing to 14 to 19 kt. Mostly sunny. Seas 2 to 3 ft.

      ⇑S 19kt
      2-3ft

    • Sunday Night

      Sunday Night:SSW wind 19 to 22 kt decreasing to 13 to 16 kt after midnight. Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Seas 5 ft subsiding to 3 ft.

      SSW 22kt⇓
      5ftWaves Subsiding

    • Monday

      Monday:NNW wind around 10 kt becoming SW in the afternoon. A chance of showers. Seas around 2 ft.

      NNW 10kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 2:46 am EDT Jun 11, 2026
Forecast Valid: 1pm EDT Jun 11, 2026-6pm EDT Jun 17, 2026

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Detailed Forecast


This Afternoon
SW wind around 12 kt. A chance of thunderstorms after 5pm. Seas 3 to 4 ft.
Tonight
W wind 8 to 10 kt. A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Seas around 3 ft.
Friday
W wind 7 to 11 kt becoming SSW in the afternoon. A chance of showers and thunderstorms after 5pm. Seas around 2 ft.
Friday Night
SW wind around 11 kt becoming NW after midnight. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am. Seas around 2 ft.
Saturday
NW wind around 9 kt becoming W in the afternoon. Sunny. Seas around 2 ft.
Saturday Night
SW wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 2 ft.
Sunday
S wind 5 to 10 kt increasing to 14 to 19 kt. Mostly sunny. Seas 2 to 3 ft.
Sunday Night
SSW wind 19 to 22 kt decreasing to 13 to 16 kt after midnight. Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Seas 5 ft subsiding to 3 ft.
Monday
NNW wind around 10 kt becoming SW in the afternoon. A chance of showers. Seas around 2 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: 2:46 am EDT Jun 11, 2026
Forecast Valid: 1pm EDT Jun 11, 2026-6pm EDT Jun 17, 2026
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