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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:S wind 13 to 16 kt becoming SW 10 to 13 kt after midnight. A slight chance of showers after midnight.   Seas 1 ft or less.

      S 16kt⇓
      < 1ft

    • Saturday

      Saturday:NNW wind 12 to 15 kt, with gusts as high as 21 kt. Sunny. Seas 1 ft or less.

      NNW 15kt
      < 1ft

    • Saturday Night

      Saturday Night:N wind 6 to 11 kt. Mostly clear. Seas 1 ft or less.

      N 11kt
      < 1ft

    • Sunday

      Sunday:NNE wind 5 to 9 kt becoming SSE in the afternoon. Mostly sunny. Seas 1 ft or less.

      SSE 9kt
      < 1ft

    • Sunday Night

      Sunday Night:S wind around 12 kt. Mostly cloudy. Seas 1 ft or less.

      S 12kt
      < 1ft

    • Monday

      Monday:SSW wind 12 to 14 kt. Mostly cloudy. Seas 1 ft or less.

      SSW 14kt
      < 1ft

    • Monday Night

      Monday Night:WSW wind 8 to 12 kt. Mostly cloudy. Seas 1 ft or less.

      WSW 12kt
      < 1ft

    • Tuesday

      Tuesday:W wind 6 to 8 kt becoming SSW in the afternoon. Mostly sunny. Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSW wind 6 to 8 kt. Mostly cloudy. Seas 1 ft or less.

      SSW 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 7:41 pm EDT Apr 10, 2026
Forecast Valid: 8pm EDT Apr 10, 2026-6pm EDT Apr 17, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

Tonight
S wind 13 to 16 kt becoming SW 10 to 13 kt after midnight. A slight chance of showers after midnight. Seas 1 ft or less.
Saturday
NNW wind 12 to 15 kt, with gusts as high as 21 kt. Sunny. Seas 1 ft or less.
Saturday Night
N wind 6 to 11 kt. Mostly clear. Seas 1 ft or less.
Sunday
NNE wind 5 to 9 kt becoming SSE in the afternoon. Mostly sunny. Seas 1 ft or less.
Sunday Night
S wind around 12 kt. Mostly cloudy. Seas 1 ft or less.
Monday
SSW wind 12 to 14 kt. Mostly cloudy. Seas 1 ft or less.
Monday Night
WSW wind 8 to 12 kt. Mostly cloudy. Seas 1 ft or less.
Tuesday
W wind 6 to 8 kt becoming SSW in the afternoon. Mostly sunny. Seas 1 ft or less.
Tuesday Night
SSW wind 6 to 8 kt. Mostly 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: 7:41 pm EDT Apr 10, 2026
Forecast Valid: 8pm EDT Apr 10, 2026-6pm EDT Apr 17, 2026
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