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Hazardous Weather Conditions

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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:WNW wind 12 to 14 kt. Snow before 8pm. Seas 1 ft or less.

      WNW 14kt
      < 1ft

    • Friday

      Friday:W wind 6 to 9 kt becoming S 13 to 18 kt. Increasing clouds. Seas 1 ft or less.

      ⇑S 18kt
      < 1ft

    • Friday Night

      Friday Night:S wind 17 to 21 kt becoming WSW after midnight. Winds could gust as high as 30 kt. Mostly cloudy, then gradually becoming mostly clear. Seas 1 ft or less.

      S 21kt
      < 1ft

    • Saturday

      Saturday:W wind 17 to 21 kt, with gusts as high as 27 kt. Sunny. Seas 1 ft or less.

      W 21kt
      < 1ft

    • Saturday Night

      Saturday Night:WNW wind 10 to 13 kt becoming NNW 6 to 9 kt after midnight. Increasing clouds. Seas 1 ft or less.

      WNW 13kt⇓
      < 1ft

    • Sunday

      Sunday:ENE wind 8 to 11 kt becoming ESE 11 to 14 kt in the afternoon. Mostly cloudy. Seas 1 ft or less.

      ⇑ESE 14kt
      < 1ft

    • Sunday Night

      Sunday Night:ESE wind 12 to 15 kt, with gusts as high as 26 kt. Rain, mainly after 2am. Seas 1 ft or less.

      ESE 15kt
      < 1ft

    • Monday

      Monday:SSE wind 18 to 20 kt, with gusts as high as 31 kt. Rain. Seas 1 ft or less.

      SSE 20kt
      < 1ft

    • Monday Night

      Monday Night:S wind 17 to 20 kt becoming WSW 14 to 17 kt after midnight. Winds could gust as high as 32 kt. Rain. Seas 1 ft or less.

      S 20kt⇓
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 6:03 pm EDT Mar 12, 2026
Forecast Valid: 7pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

Tonight
WNW wind 12 to 14 kt. Snow before 8pm. Seas 1 ft or less.
Friday
W wind 6 to 9 kt becoming S 13 to 18 kt. Increasing clouds. Seas 1 ft or less.
Friday Night
S wind 17 to 21 kt becoming WSW after midnight. Winds could gust as high as 30 kt. Mostly cloudy, then gradually becoming mostly clear. Seas 1 ft or less.
Saturday
W wind 17 to 21 kt, with gusts as high as 27 kt. Sunny. Seas 1 ft or less.
Saturday Night
WNW wind 10 to 13 kt becoming NNW 6 to 9 kt after midnight. Increasing clouds. Seas 1 ft or less.
Sunday
ENE wind 8 to 11 kt becoming ESE 11 to 14 kt in the afternoon. Mostly cloudy. Seas 1 ft or less.
Sunday Night
ESE wind 12 to 15 kt, with gusts as high as 26 kt. Rain, mainly after 2am. Seas 1 ft or less.
Monday
SSE wind 18 to 20 kt, with gusts as high as 31 kt. Rain. Seas 1 ft or less.
Monday Night
S wind 17 to 20 kt becoming WSW 14 to 17 kt after midnight. Winds could gust as high as 32 kt. Rain. 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: 6:03 pm EDT Mar 12, 2026
Forecast Valid: 7pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026
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