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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NNW wind 11 to 16 kt, with gusts as high as 24 kt. Mostly clear. Seas 1 ft or less.

      NNW 16kt
      < 1ft

    • Saturday

      Saturday:N wind 9 to 11 kt. Sunny. Seas 1 ft or less.

      N 11kt
      < 1ft

    • Saturday Night

      Saturday Night:NW wind 5 to 7 kt becoming N after midnight. Partly cloudy. Seas 1 ft or less.

      NNW 7kt
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming W 5 to 7 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑W 7kt
      < 1ft

    • Sunday Night

      Sunday Night:WSW wind around 6 kt. Partly cloudy. Seas 1 ft or less.

      WSW 6kt
      < 1ft

    • Monday

      Monday:WSW wind 7 to 10 kt. Mostly sunny. Seas 1 ft or less.

      WSW 10kt
      < 1ft

    • Monday Night

      Monday Night:SW wind around 6 kt. Partly cloudy. Seas 1 ft or less.

      SW 6kt
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming S 5 to 7 kt in the morning. Mostly sunny. Seas 1 ft or less.

      ⇑S 7kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSE wind around 6 kt. Partly cloudy. Seas 1 ft or less.

      SSE 6kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:32 pm EDT Oct 30, 2026
Forecast Valid: 8pm EDT Oct 30, 2026-6pm EST Nov 6, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Tonight
NNW wind 11 to 16 kt, with gusts as high as 24 kt. Mostly clear. Seas 1 ft or less.
Saturday
N wind 9 to 11 kt. Sunny. Seas 1 ft or less.
Saturday Night
NW wind 5 to 7 kt becoming N after midnight. Partly cloudy. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming W 5 to 7 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Sunday Night
WSW wind around 6 kt. Partly cloudy. Seas 1 ft or less.
Monday
WSW wind 7 to 10 kt. Mostly sunny. Seas 1 ft or less.
Monday Night
SW wind around 6 kt. Partly cloudy. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming S 5 to 7 kt in the morning. Mostly sunny. Seas 1 ft or less.
Tuesday Night
SSE wind around 6 kt. Partly cloudy. 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: 2:32 pm EDT Oct 30, 2026
Forecast Valid: 8pm EDT Oct 30, 2026-6pm EST Nov 6, 2026
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