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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Friday

      Friday:NW wind 10 to 13 kt becoming N in the afternoon. Showers, mainly before 11am.   Seas 1 ft or less.

      N 13kt
      < 1ft

    • Friday Night

      Friday Night:NE wind 7 to 9 kt becoming N after midnight. Mostly cloudy. Seas 1 ft or less.

      N 9kt
      < 1ft

    • Saturday

      Saturday:NW wind around 13 kt. Mostly sunny. Seas 1 ft or less.

      NW 13kt
      < 1ft

    • Saturday Night

      Saturday Night:NW wind 6 to 9 kt. Mostly clear. Seas 1 ft or less.

      NW 9kt
      < 1ft

    • Sunday

      Sunday:SSW wind 8 to 11 kt increasing to 13 to 16 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑SSW 16kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind 9 to 12 kt. Partly cloudy. Seas 1 ft or less.

      SW 12kt
      < 1ft

    • Monday

      Monday:SW wind 8 to 11 kt. Partly sunny. Seas 1 ft or less.

      SW 11kt
      < 1ft

    • Monday Night

      Monday Night:WSW wind around 9 kt. Mostly cloudy. Seas 1 ft or less.

      WSW 9kt
      < 1ft

    • Tuesday

      Tuesday:W wind 8 to 10 kt becoming SSE in the afternoon. A chance of rain.   Seas 1 ft or less.

      S 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 7:31 pm EDT Mar 26, 2026
Forecast Valid: 1am EDT Mar 27, 2026-6pm EDT Apr 2, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

Friday
NW wind 10 to 13 kt becoming N in the afternoon. Showers, mainly before 11am. Seas 1 ft or less.
Friday Night
NE wind 7 to 9 kt becoming N after midnight. Mostly cloudy. Seas 1 ft or less.
Saturday
NW wind around 13 kt. Mostly sunny. Seas 1 ft or less.
Saturday Night
NW wind 6 to 9 kt. Mostly clear. Seas 1 ft or less.
Sunday
SSW wind 8 to 11 kt increasing to 13 to 16 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Sunday Night
SW wind 9 to 12 kt. Partly cloudy. Seas 1 ft or less.
Monday
SW wind 8 to 11 kt. Partly sunny. Seas 1 ft or less.
Monday Night
WSW wind around 9 kt. Mostly cloudy. Seas 1 ft or less.
Tuesday
W wind 8 to 10 kt becoming SSE in the afternoon. A chance of rain. 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: 7:31 pm EDT Mar 26, 2026
Forecast Valid: 1am EDT Mar 27, 2026-6pm EDT Apr 2, 2026
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