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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

      Today:W wind 7 to 9 kt. Sunny. Seas 1 ft or less.

      W 9kt
      < 1ft

    • Tonight

      Tonight:W wind 8 to 10 kt becoming N after midnight. Mostly clear. Seas 1 ft or less.

      N 10kt
      < 1ft

    • Tuesday

      Tuesday:NNE wind 7 to 11 kt. Sunny. Seas 1 ft or less.

      NNE 11kt
      < 1ft

    • Tuesday Night

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

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:NE wind around 6 kt becoming SE in the afternoon. Sunny. Seas 1 ft or less.

      NE 6kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind around 6 kt becoming SW after midnight. Partly cloudy. Seas 1 ft or less.

      S 6kt
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Mostly sunny. Seas 1 ft or less.

      ⇑SSW 10kt
      < 1ft

    • Thursday Night

      Thursday Night:WSW wind around 8 kt. Mostly clear. Seas 1 ft or less.

      WSW 8kt
      < 1ft

    • Friday

      Friday:W wind around 8 kt. Sunny. Seas 1 ft or less.

      W 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:57 am EDT Oct 26, 2026
Forecast Valid: 6am EDT Oct 26, 2026-6pm EST Nov 1, 2026

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Detailed Forecast


Today
W wind 7 to 9 kt. Sunny. Seas 1 ft or less.
Tonight
W wind 8 to 10 kt becoming N after midnight. Mostly clear. Seas 1 ft or less.
Tuesday
NNE wind 7 to 11 kt. Sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Wednesday
NE wind around 6 kt becoming SE in the afternoon. Sunny. Seas 1 ft or less.
Wednesday Night
S wind around 6 kt becoming SW after midnight. Partly cloudy. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Mostly sunny. Seas 1 ft or less.
Thursday Night
WSW wind around 8 kt. Mostly clear. Seas 1 ft or less.
Friday
W wind around 8 kt. 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: 2:57 am EDT Oct 26, 2026
Forecast Valid: 6am EDT Oct 26, 2026-6pm EST Nov 1, 2026
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