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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:WNW wind 6 to 11 kt becoming SW in the afternoon. Sunny. Seas around 2 ft.

      SW 11kt
      2ft

    • Tonight

      Tonight:SW wind 10 to 13 kt becoming WSW 6 to 9 kt after midnight. Increasing clouds. Seas around 2 ft.

      SW 13kt⇓
      2ft

    • Sunday

      Sunday:SW wind 8 to 11 kt becoming S 14 to 19 kt in the afternoon. A chance of showers and thunderstorms after 5pm. Seas 2 to 3 ft.

      ⇑S 19kt
      2-3ft

    • Sunday Night

      Sunday Night:S wind 19 to 22 kt becoming WSW 14 to 17 kt after midnight. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Seas 4 to 5 ft.

      S 22kt⇓
      4-5ft

    • Monday

      Monday:NW wind 10 to 14 kt becoming W in the afternoon. A slight chance of showers before 8am. Seas around 3 ft.

      NW 14kt
      3ft

    • Monday Night

      Monday Night:W wind 6 to 11 kt becoming NW after midnight. Partly cloudy. Seas around 3 ft.

      W 11kt
      3ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSW 8 to 13 kt in the morning. Mostly sunny. Seas around 2 ft.

      ⇑SSW 13kt
      2ft

    • Tuesday Night

      Tuesday Night:SSW wind 12 to 15 kt decreasing to 7 to 10 kt after midnight. Partly cloudy. Seas around 3 ft.

      SSW 15kt⇓
      3ft

    • Wednesday

      Wednesday:S wind 6 to 9 kt increasing to 10 to 13 kt in the afternoon. Mostly sunny. Seas around 2 ft.

      ⇑S 13kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 7:54 am EDT Jun 13, 2026
Forecast Valid: 9am EDT Jun 13, 2026-6pm EDT Jun 19, 2026

View Nearby Observations

Detailed Forecast


Today
WNW wind 6 to 11 kt becoming SW in the afternoon. Sunny. Seas around 2 ft.
Tonight
SW wind 10 to 13 kt becoming WSW 6 to 9 kt after midnight. Increasing clouds. Seas around 2 ft.
Sunday
SW wind 8 to 11 kt becoming S 14 to 19 kt in the afternoon. A chance of showers and thunderstorms after 5pm. Seas 2 to 3 ft.
Sunday Night
S wind 19 to 22 kt becoming WSW 14 to 17 kt after midnight. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Seas 4 to 5 ft.
Monday
NW wind 10 to 14 kt becoming W in the afternoon. A slight chance of showers before 8am. Seas around 3 ft.
Monday Night
W wind 6 to 11 kt becoming NW after midnight. Partly cloudy. Seas around 3 ft.
Tuesday
Variable winds less than 5 kt becoming SSW 8 to 13 kt in the morning. Mostly sunny. Seas around 2 ft.
Tuesday Night
SSW wind 12 to 15 kt decreasing to 7 to 10 kt after midnight. Partly cloudy. Seas around 3 ft.
Wednesday
S wind 6 to 9 kt increasing to 10 to 13 kt in the afternoon. Mostly 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: 7:54 am EDT Jun 13, 2026
Forecast Valid: 9am EDT Jun 13, 2026-6pm EDT Jun 19, 2026
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