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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Sunday

      Sunday:NNW wind 6 to 11 kt becoming SW in the afternoon. Increasing clouds. Seas 1 ft or less.

      SW 11kt
      < 1ft

    • Sunday Night

      Sunday Night:SSW wind 6 to 10 kt becoming W after midnight. Mostly cloudy. Seas 1 ft or less.

      SSW 10kt
      < 1ft

    • Monday

      Monday:WNW wind 5 to 10 kt becoming E in the afternoon. Sunny. Seas 1 ft or less.

      E 10kt
      < 1ft

    • Monday Night

      Monday Night:ENE wind 9 to 12 kt decreasing to 6 to 9 kt after midnight. Mostly clear. Seas 1 ft or less.

      ENE 12kt⇓
      < 1ft

    • Tuesday

      Tuesday:NE wind 6 to 9 kt becoming SE in the afternoon. Sunny. Seas 1 ft or less.

      ESE 9kt
      < 1ft

    • Tuesday Night

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

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:NNE wind around 8 kt becoming ESE in the afternoon. Mostly sunny. Seas 1 ft or less.

      NE 8kt
      < 1ft

    • Wednesday Night

      Wednesday Night:ESE wind around 6 kt becoming variable and less than 5 kt. Partly cloudy. Seas 1 ft or less.

      ESE 6kt⇓
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 8:38 pm EDT May 30, 2026
Forecast Valid: 11pm EDT May 30, 2026-6pm EDT Jun 6, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

Overnight
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Sunday
NNW wind 6 to 11 kt becoming SW in the afternoon. Increasing clouds. Seas 1 ft or less.
Sunday Night
SSW wind 6 to 10 kt becoming W after midnight. Mostly cloudy. Seas 1 ft or less.
Monday
WNW wind 5 to 10 kt becoming E in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
ENE wind 9 to 12 kt decreasing to 6 to 9 kt after midnight. Mostly clear. Seas 1 ft or less.
Tuesday
NE wind 6 to 9 kt becoming SE in the afternoon. Sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Wednesday
NNE wind around 8 kt becoming ESE in the afternoon. Mostly sunny. Seas 1 ft or less.
Wednesday Night
ESE wind around 6 kt becoming variable and less than 5 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: 8:38 pm EDT May 30, 2026
Forecast Valid: 11pm EDT May 30, 2026-6pm EDT Jun 6, 2026
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