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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SSW wind around 10 kt. Sunny. Seas 1 ft or less.

      SSW 10kt
      < 1ft

    • Tonight

      Tonight:WSW wind around 12 kt. Mostly clear. Seas 1 ft or less.

      WSW 12kt
      < 1ft

    • Friday

      Friday:W wind 9 to 13 kt becoming NW in the morning. Sunny. Seas 1 ft or less.

      NW 13kt
      < 1ft

    • Friday Night

      Friday Night:NNW wind 10 to 14 kt. Mostly clear. Seas 1 ft or less.

      NNW 14kt
      < 1ft

    • Saturday

      Saturday:N wind 7 to 9 kt. Sunny. Seas 1 ft or less.

      N 9kt
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming WSW around 6 kt in the afternoon. Partly sunny. Seas 1 ft or less.

      ⇑WSW 6kt
      < 1ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Monday

      Monday:SW wind 5 to 8 kt. Mostly sunny. Seas 1 ft or less.

      SW 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:25 pm EDT Oct 29, 2026
Forecast Valid: 3pm EDT Oct 29, 2026-6pm EST Nov 5, 2026

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Detailed Forecast

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

This Afternoon
SSW wind around 10 kt. Sunny. Seas 1 ft or less.
Tonight
WSW wind around 12 kt. Mostly clear. Seas 1 ft or less.
Friday
W wind 9 to 13 kt becoming NW in the morning. Sunny. Seas 1 ft or less.
Friday Night
NNW wind 10 to 14 kt. Mostly clear. Seas 1 ft or less.
Saturday
N wind 7 to 9 kt. Sunny. Seas 1 ft or less.
Saturday Night
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming WSW around 6 kt in the afternoon. Partly sunny. Seas 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Monday
SW wind 5 to 8 kt. Mostly sunny. 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: 2:25 pm EDT Oct 29, 2026
Forecast Valid: 3pm EDT Oct 29, 2026-6pm EST Nov 5, 2026
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