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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:SSW wind 14 to 17 kt becoming SW 11 to 14 kt after midnight. Winds could gust as high as 24 kt. Mostly clear. Seas 1 ft or less.

      SSW 17kt⇓
      < 1ft

    • Tuesday

      Tuesday:WSW wind 10 to 15 kt. Sunny. Seas 1 ft or less.

      WSW 15kt
      < 1ft

    • Tuesday Night

      Tuesday Night:WSW wind 14 to 16 kt. Mostly clear. Seas 1 ft or less.

      WSW 16kt
      < 1ft

    • Wednesday

      Wednesday:WSW wind around 12 kt. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      WSW 12kt
      < 1ft

    • Wednesday Night

      Wednesday Night:NW wind 7 to 12 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas 1 ft or less.

      NW 12kt⇓
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming SW 7 to 12 kt in the morning. Mostly sunny. Seas 1 ft or less.

      ⇑SW 12kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

      W 10kt⇓
      < 1ft

    • Friday

      Friday:NW wind 5 to 9 kt becoming WSW in the afternoon. Mostly sunny. Seas 1 ft or less.

      WSW 9kt
      < 1ft

    • Friday Night

      Friday Night:W wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

      W 8kt⇓
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:14 pm EDT Jul 13, 2026
Forecast Valid: 6pm EDT Jul 13, 2026-6pm EDT Jul 20, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH

Tonight
SSW wind 14 to 17 kt becoming SW 11 to 14 kt after midnight. Winds could gust as high as 24 kt. Mostly clear. Seas 1 ft or less.
Tuesday
WSW wind 10 to 15 kt. Sunny. Seas 1 ft or less.
Tuesday Night
WSW wind 14 to 16 kt. Mostly clear. Seas 1 ft or less.
Wednesday
WSW wind around 12 kt. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Wednesday Night
NW wind 7 to 12 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming SW 7 to 12 kt in the morning. Mostly sunny. Seas 1 ft or less.
Thursday Night
W wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.
Friday
NW wind 5 to 9 kt becoming WSW in the afternoon. Mostly sunny. Seas 1 ft or less.
Friday Night
W wind 5 to 8 kt becoming variable and less than 5 kt in the evening. 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: 3:14 pm EDT Jul 13, 2026
Forecast Valid: 6pm EDT Jul 13, 2026-6pm EDT Jul 20, 2026
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