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New York, NY Local Forecast Office

9NM E Islip NY

Marine Point Forecast

[NOTICE]

    • Juneteenth

      Juneteenth:W wind 12 to 14 kt becoming SW in the afternoon. Winds could gust as high as 22 kt. Partly sunny. Seas around 1 ft.

      WSW 14kt
      1ft

    • Tonight

      Tonight:WSW wind 10 to 14 kt becoming WNW in the evening. Mostly clear. Seas around 1 ft.

      WNW 14kt
      1ft

    • Saturday

      Saturday:W wind 14 to 18 kt. Sunny. Seas around 1 ft.

      W 18kt
      1ft

    • Saturday Night

      Saturday Night:WNW wind 7 to 10 kt. Mostly clear. Seas 1 ft or less.

      WNW 10kt
      < 1ft

    • Sunday

      Sunday:WNW wind 5 to 8 kt becoming SW 8 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SW 11kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

      SW 8kt⇓
      < 1ft

    • Monday

      Monday:SSE wind 7 to 12 kt increasing to 17 to 22 kt. Winds could gust as high as 32 kt. A chance of thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then rain and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      ⇑SSE 22kt
      < 1ft

    • Monday Night

      Monday Night:SSW wind 23 to 26 kt becoming WSW 17 to 20 kt after midnight. Winds could gust as high as 33 kt. Rain before 8pm, then showers likely, mainly between 8pm and 2am. Seas 1 to 2 ft.

      SSW 26kt⇓
      1-2ft

    • Tuesday

      Tuesday:W wind 10 to 12 kt. A chance of showers. Seas around 1 ft.

      W 12kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 2:29 am EDT Jun 19, 2026
Forecast Valid: 6am EDT Jun 19, 2026-6pm EDT Jun 25, 2026

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Detailed Forecast


Juneteenth
W wind 12 to 14 kt becoming SW in the afternoon. Winds could gust as high as 22 kt. Partly sunny. Seas around 1 ft.
Tonight
WSW wind 10 to 14 kt becoming WNW in the evening. Mostly clear. Seas around 1 ft.
Saturday
W wind 14 to 18 kt. Sunny. Seas around 1 ft.
Saturday Night
WNW wind 7 to 10 kt. Mostly clear. Seas 1 ft or less.
Sunday
WNW wind 5 to 8 kt becoming SW 8 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.
Sunday Night
SW wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.
Monday
SSE wind 7 to 12 kt increasing to 17 to 22 kt. Winds could gust as high as 32 kt. A chance of thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then rain and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Monday Night
SSW wind 23 to 26 kt becoming WSW 17 to 20 kt after midnight. Winds could gust as high as 33 kt. Rain before 8pm, then showers likely, mainly between 8pm and 2am. Seas 1 to 2 ft.
Tuesday
W wind 10 to 12 kt. A chance of showers. Seas around 1 ft.

Winds and waves 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: 40.71°N 73.02°W
Last Update: 2:29 am EDT Jun 19, 2026
Forecast Valid: 6am EDT Jun 19, 2026-6pm EDT Jun 25, 2026
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