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Hazardous Weather Conditions

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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Tuesday

      Tuesday:SSW wind 15 to 18 kt, with gusts as high as 24 kt. A chance of showers, mainly before 8am. Seas 5 to 6 ft.

      SSW 18kt
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday Night

      Tuesday Night:SSW wind 20 to 22 kt, with gusts as high as 28 kt. A slight chance of showers after 2am. Seas around 7 ft.

      SSW 22kt
      7ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:SSW wind 11 to 16 kt, with gusts as high as 22 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 5 to 6 ft.

      SSW 16kt
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:SE wind 12 to 17 kt becoming ENE in the evening. Winds could gust as high as 23 kt. Rain and possibly a thunderstorm, mainly before 2am, then a chance of rain and thunderstorms after 2am. Seas around 4 ft.

      ENE 17kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:ENE wind around 17 kt, with gusts as high as 23 kt. A chance of rain, mainly before 2pm. Seas around 5 ft.

      ENE 17kt
      5ft

    • Thursday Night

      Thursday Night:E wind 12 to 17 kt, with gusts as high as 23 kt. A chance of rain between 8pm and 2am. Seas 4 to 5 ft.

      E 17kt
      4-5ft

    • Friday

      Friday:SE wind 9 to 12 kt becoming SSW in the afternoon. Mostly cloudy. Seas 3 to 4 ft.

      S 12kt
      3-4ft

    • Friday Night

      Friday Night:SW wind 19 to 22 kt decreasing to 16 to 19 kt after midnight. Mostly cloudy. Seas 4 to 5 ft.

      SW 22kt⇓
      4-5ft

    • Saturday

      Saturday:WSW wind 11 to 14 kt becoming S in the afternoon. Partly sunny. Seas around 4 ft.

      S 14kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 2:46 am EDT Mar 31, 2026
Forecast Valid: 4am EDT Mar 31, 2026-6pm EDT Apr 6, 2026

View Nearby Observations

Detailed Forecast

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

Tuesday
SSW wind 15 to 18 kt, with gusts as high as 24 kt. A chance of showers, mainly before 8am. Seas 5 to 6 ft.
Tuesday Night
SSW wind 20 to 22 kt, with gusts as high as 28 kt. A slight chance of showers after 2am. Seas around 7 ft.
Wednesday
SSW wind 11 to 16 kt, with gusts as high as 22 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 5 to 6 ft.
Wednesday Night
SE wind 12 to 17 kt becoming ENE in the evening. Winds could gust as high as 23 kt. Rain and possibly a thunderstorm, mainly before 2am, then a chance of rain and thunderstorms after 2am. Seas around 4 ft.
Thursday
ENE wind around 17 kt, with gusts as high as 23 kt. A chance of rain, mainly before 2pm. Seas around 5 ft.
Thursday Night
E wind 12 to 17 kt, with gusts as high as 23 kt. A chance of rain between 8pm and 2am. Seas 4 to 5 ft.
Friday
SE wind 9 to 12 kt becoming SSW in the afternoon. Mostly cloudy. Seas 3 to 4 ft.
Friday Night
SW wind 19 to 22 kt decreasing to 16 to 19 kt after midnight. Mostly cloudy. Seas 4 to 5 ft.
Saturday
WSW wind 11 to 14 kt becoming S in the afternoon. Partly sunny. Seas around 4 ft.

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: 40.53°N 73.44°W
Last Update: 2:46 am EDT Mar 31, 2026
Forecast Valid: 4am EDT Mar 31, 2026-6pm EDT Apr 6, 2026
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