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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]

    • Monday

      Monday:SW wind 19 to 21 kt. A slight chance of showers after 2pm. Seas 4 to 5 ft.

      SW 21kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday Night

      Monday Night:SSW wind 18 to 20 kt. Showers likely, mainly after 5am. Seas 5 to 6 ft.

      SSW 20kt
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday

      Tuesday:SSW wind 17 to 20 kt. Showers likely, mainly before 8am. Seas around 5 ft.

      SSW 20kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday Night

      Tuesday Night:SSW wind 24 to 26 kt. Mostly cloudy. Seas 7 to 8 ft.

      SSW 26kt
      7-8ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:SSW wind 17 to 22 kt. Showers likely and possibly a thunderstorm, mainly after 5pm. Seas 6 to 7 ft.

      SSW 22kt
      6-7ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:WSW wind 12 to 14 kt becoming ENE after midnight. Showers likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Seas 4 to 5 ft.

      WSW 14kt
      4-5ft

    • Thursday

      Thursday:E wind 22 to 24 kt. A chance of showers before 2pm. Seas 4 ft building to 6 ft.

      E 24kt
      Waves Building6ft

    • Thursday Night

      Thursday Night:E wind 19 to 23 kt. A chance of rain. Seas 5 to 6 ft.

      E 23kt
      5-6ft

    • Friday

      Friday:S wind 16 to 18 kt. Mostly cloudy. Seas around 4 ft.

      S 18kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 2:28 am EDT Mar 30, 2026
Forecast Valid: 4am EDT Mar 30, 2026-6pm EDT Apr 5, 2026

View Nearby Observations

Detailed Forecast

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

Monday
SW wind 19 to 21 kt. A slight chance of showers after 2pm. Seas 4 to 5 ft.
Monday Night
SSW wind 18 to 20 kt. Showers likely, mainly after 5am. Seas 5 to 6 ft.
Tuesday
SSW wind 17 to 20 kt. Showers likely, mainly before 8am. Seas around 5 ft.
Tuesday Night
SSW wind 24 to 26 kt. Mostly cloudy. Seas 7 to 8 ft.
Wednesday
SSW wind 17 to 22 kt. Showers likely and possibly a thunderstorm, mainly after 5pm. Seas 6 to 7 ft.
Wednesday Night
WSW wind 12 to 14 kt becoming ENE after midnight. Showers likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Seas 4 to 5 ft.
Thursday
E wind 22 to 24 kt. A chance of showers before 2pm. Seas 4 ft building to 6 ft.
Thursday Night
E wind 19 to 23 kt. A chance of rain. Seas 5 to 6 ft.
Friday
S wind 16 to 18 kt. Mostly cloudy. 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: 2:28 am EDT Mar 30, 2026
Forecast Valid: 4am EDT Mar 30, 2026-6pm EDT Apr 5, 2026
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