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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:WSW wind around 11 kt. Mostly sunny. Seas 1 ft or less.

      WSW 11kt
      < 1ft

    • Tonight

      Tonight:W wind around 8 kt becoming WNW after midnight. A slight chance of showers between 11pm and 2am.   Seas 1 ft or less.

      W 8kt
      < 1ft

    • Tuesday

      Tuesday:WNW wind 11 to 15 kt. Mostly sunny. Seas 1 ft or less.

      WNW 15kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NW wind 10 to 14 kt becoming N after midnight. Mostly clear. Seas 1 ft or less.

      NW 14kt
      < 1ft

    • Wednesday

      Wednesday:NNE wind 6 to 8 kt becoming SE in the afternoon. Sunny. Seas 1 ft or less.

      NNE 8kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

      S 8kt
      < 1ft

    • Thursday

      Thursday:SE wind 7 to 11 kt. Mostly sunny. Seas 1 ft or less.

      SE 11kt
      < 1ft

    • Thursday Night

      Thursday Night:S wind 6 to 8 kt. Partly cloudy. Seas 1 ft or less.

      S 8kt
      < 1ft

    • Friday

      Friday:S wind 5 to 10 kt. Mostly sunny. Seas 1 ft or less.

      S 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 11:05 am EDT Apr 6, 2026
Forecast Valid: 12pm EDT Apr 6, 2026-6pm EDT Apr 12, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

This Afternoon
WSW wind around 11 kt. Mostly sunny. Seas 1 ft or less.
Tonight
W wind around 8 kt becoming WNW after midnight. A slight chance of showers between 11pm and 2am. Seas 1 ft or less.
Tuesday
WNW wind 11 to 15 kt. Mostly sunny. Seas 1 ft or less.
Tuesday Night
NW wind 10 to 14 kt becoming N after midnight. Mostly clear. Seas 1 ft or less.
Wednesday
NNE wind 6 to 8 kt becoming SE in the afternoon. Sunny. Seas 1 ft or less.
Wednesday Night
S wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.
Thursday
SE wind 7 to 11 kt. Mostly sunny. Seas 1 ft or less.
Thursday Night
S wind 6 to 8 kt. Partly cloudy. Seas 1 ft or less.
Friday
S wind 5 to 10 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: 11:05 am EDT Apr 6, 2026
Forecast Valid: 12pm EDT Apr 6, 2026-6pm EDT Apr 12, 2026
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