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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Sunday

      Sunday:E wind around 10 kt. A slight chance of light rain before 8am.   Seas 1 ft or less.

      E 10kt
      < 1ft

    • Sunday Night

      Sunday Night:E wind around 8 kt. Mostly cloudy. Seas 1 ft or less.

      E 8kt
      < 1ft

    • Monday

      Monday:E wind around 10 kt. Mostly cloudy. Seas 1 ft or less.

      E 10kt
      < 1ft

    • Monday Night

      Monday Night:E wind 5 to 8 kt. Mostly cloudy. Seas 1 ft or less.

      E 8kt
      < 1ft

    • Tuesday

      Tuesday:ENE wind 5 to 8 kt becoming ESE in the afternoon. Mostly cloudy. Seas 1 ft or less.

      ESE 8kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSE wind 5 to 7 kt. A chance of showers after 2am.   Seas 1 ft or less.

      SSE 7kt
      < 1ft

    • Wednesday

      Wednesday:S wind 5 to 9 kt. A chance of showers before 8am.   Seas 1 ft or less.

      S 9kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SW wind around 9 kt. Partly cloudy. Seas 1 ft or less.

      SW 9kt
      < 1ft

    • Juneteenth

      Juneteenth:SW wind 9 to 14 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms after 2pm.   Seas 1 ft or less.

      SW 14kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 9:07 pm EDT Jun 14, 2025
Forecast Valid: 1am EDT Jun 15, 2025-6pm EDT Jun 21, 2025

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT SUNDAY...

Sunday
E wind around 10 kt. A slight chance of light rain before 8am. Seas 1 ft or less.
Sunday Night
E wind around 8 kt. Mostly cloudy. Seas 1 ft or less.
Monday
E wind around 10 kt. Mostly cloudy. Seas 1 ft or less.
Monday Night
E wind 5 to 8 kt. Mostly cloudy. Seas 1 ft or less.
Tuesday
ENE wind 5 to 8 kt becoming ESE in the afternoon. Mostly cloudy. Seas 1 ft or less.
Tuesday Night
SSE wind 5 to 7 kt. A chance of showers after 2am. Seas 1 ft or less.
Wednesday
S wind 5 to 9 kt. A chance of showers before 8am. Seas 1 ft or less.
Wednesday Night
SW wind around 9 kt. Partly cloudy. Seas 1 ft or less.
Juneteenth
SW wind 9 to 14 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

*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: 40.62°N 73.59°W
Last Update: 9:07 pm EDT Jun 14, 2025
Forecast Valid: 1am EDT Jun 15, 2025-6pm EDT Jun 21, 2025
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