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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:SW wind 9 to 12 kt becoming S 14 to 17 kt in the afternoon. Sunny. Seas 2 to 3 ft.

      ⇑S 17kt
      2-3ft

    • Tonight

      Tonight:SW wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. Increasing clouds. Seas 4 ft subsiding to 2 ft.

      SW 20kt⇓
      4ftWaves Subsiding

    • Wednesday

      Wednesday:S wind 9 to 12 kt increasing to 12 to 15 kt in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas 2 to 3 ft.

      ⇑S 15kt
      2-3ft

    • Wednesday Night

      Wednesday Night:SW wind 10 to 14 kt. Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers and thunderstorms after 2am. Seas around 3 ft.

      SW 14kt
      3ft

    • Thursday

      Thursday:SW wind 8 to 11 kt. A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms after 2pm. Seas around 3 ft.

      SW 11kt
      3ft

    • Thursday Night

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

      WSW 10kt
      3ft

    • Friday

      Friday:WSW wind 5 to 8 kt becoming S 9 to 12 kt in the afternoon. Partly sunny. Seas around 2 ft.

      ⇑S 12kt
      2ft

    • Friday Night

      Friday Night:S wind 7 to 10 kt becoming WSW after midnight. A chance of showers. Seas around 2 ft.

      S 10kt
      2ft

    • Saturday

      Saturday:NW wind 6 to 10 kt becoming SW in the afternoon. Partly sunny. Seas around 2 ft.

      SW 10kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 3:26 am EDT Jun 9, 2026
Forecast Valid: 5am EDT Jun 9, 2026-6pm EDT Jun 15, 2026

View Nearby Observations

Detailed Forecast


Today
SW wind 9 to 12 kt becoming S 14 to 17 kt in the afternoon. Sunny. Seas 2 to 3 ft.
Tonight
SW wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. Increasing clouds. Seas 4 ft subsiding to 2 ft.
Wednesday
S wind 9 to 12 kt increasing to 12 to 15 kt in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas 2 to 3 ft.
Wednesday Night
SW wind 10 to 14 kt. Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers and thunderstorms after 2am. Seas around 3 ft.
Thursday
SW wind 8 to 11 kt. A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms after 2pm. Seas around 3 ft.
Thursday Night
WSW wind 8 to 10 kt. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas around 3 ft.
Friday
WSW wind 5 to 8 kt becoming S 9 to 12 kt in the afternoon. Partly sunny. Seas around 2 ft.
Friday Night
S wind 7 to 10 kt becoming WSW after midnight. A chance of showers. Seas around 2 ft.
Saturday
NW wind 6 to 10 kt becoming SW in the afternoon. Partly sunny. 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: 3:26 am EDT Jun 9, 2026
Forecast Valid: 5am EDT Jun 9, 2026-6pm EDT Jun 15, 2026
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