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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]

    • Today

      Today:SW wind 12 to 15 kt, with gusts as high as 23 kt. A chance of showers, mainly before 8am. Seas 1 ft or less.

      SW 15kt
      < 1ft

    • Tonight

      Tonight:SSW wind 14 to 16 kt, with gusts as high as 22 kt. A slight chance of showers after 2am. Seas 1 ft or less.

      SSW 16kt
      < 1ft

    • Wednesday

      Wednesday:SW wind 9 to 12 kt. A slight chance of showers before 8am, then a slight chance of rain between 8am and 2pm, then rain likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      SW 12kt
      < 1ft

    • Wednesday Night

      Wednesday Night:ESE wind 8 to 12 kt becoming NE in the evening. Rain and possibly a thunderstorm. Seas 1 ft or less.

      ENE 12kt
      < 1ft

    • Thursday

      Thursday:ENE wind around 13 kt. A chance of rain, mainly before 2pm. Seas 1 ft or less.

      ENE 13kt
      < 1ft

    • Thursday Night

      Thursday Night:E wind 9 to 13 kt. A chance of rain between 8pm and 2am. Seas 1 ft or less.

      E 13kt
      < 1ft

    • Friday

      Friday:ESE wind 6 to 9 kt becoming S in the afternoon. Mostly cloudy. Seas 1 ft or less.

      S 9kt
      < 1ft

    • Friday Night

      Friday Night:SW wind 9 to 11 kt. Mostly cloudy. Seas 1 ft or less.

      SW 11kt
      < 1ft

    • Saturday

      Saturday:WSW wind 7 to 10 kt becoming S in the afternoon. Partly sunny. Seas 1 ft or less.

      S 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:46 am EDT Mar 31, 2026
Forecast Valid: 7am EDT Mar 31, 2026-6pm EDT Apr 6, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT...

Today
SW wind 12 to 15 kt, with gusts as high as 23 kt. A chance of showers, mainly before 8am. Seas 1 ft or less.
Tonight
SSW wind 14 to 16 kt, with gusts as high as 22 kt. A slight chance of showers after 2am. Seas 1 ft or less.
Wednesday
SW wind 9 to 12 kt. A slight chance of showers before 8am, then a slight chance of rain between 8am and 2pm, then rain likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Wednesday Night
ESE wind 8 to 12 kt becoming NE in the evening. Rain and possibly a thunderstorm. Seas 1 ft or less.
Thursday
ENE wind around 13 kt. A chance of rain, mainly before 2pm. Seas 1 ft or less.
Thursday Night
E wind 9 to 13 kt. A chance of rain between 8pm and 2am. Seas 1 ft or less.
Friday
ESE wind 6 to 9 kt becoming S in the afternoon. Mostly cloudy. Seas 1 ft or less.
Friday Night
SW wind 9 to 11 kt. Mostly cloudy. Seas 1 ft or less.
Saturday
WSW wind 7 to 10 kt becoming S in the afternoon. Partly sunny. Seas 1 ft or less.

Winds and seas may be higher in and near tstms.

*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: 2:46 am EDT Mar 31, 2026
Forecast Valid: 7am EDT Mar 31, 2026-6pm EDT Apr 6, 2026
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