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Hazardous Weather Conditions

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New York, NY Local Forecast Office

19NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:SSW wind 19 to 21 kt. A slight chance of showers after 2am. Seas around 6 ft.

      SSW 21kt
      6ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:SW wind 10 to 14 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas 6 ft subsiding to 4 ft.

      SW 14kt
      6ftWaves Subsiding

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:E wind 6 to 9 kt becoming ENE 11 to 16 kt in the evening. Showers and possibly a thunderstorm before midnight, then showers likely. Patchy fog after 2am. Seas 3 to 4 ft.

      ⇑ENE 16kt
      3-4ft

    • Thursday

      Thursday:ENE wind 17 to 19 kt. A chance of light rain, mainly before noon. Patchy fog. Seas around 4 ft.

      ENE 19kt
      4ft

    • Thursday Night

      Thursday Night:E wind 13 to 16 kt decreasing to 10 to 13 kt after midnight. A chance of light rain, mainly before midnight. Patchy fog. Seas 3 to 4 ft.

      E 16kt⇓
      3-4ft

    • Friday

      Friday:SE wind 7 to 12 kt becoming S in the morning. Areas of fog before noon. Seas 2 to 3 ft.

      S 12kt
      2-3ft

    • Friday Night

      Friday Night:SSW wind 16 to 19 kt decreasing to 13 to 16 kt after midnight. Mostly cloudy. Seas 3 to 4 ft.

      SSW 19kt⇓
      3-4ft

    • Saturday

      Saturday:SW wind 10 to 14 kt becoming S in the afternoon. Mostly sunny. Seas 2 to 3 ft.

      S 14kt
      2-3ft

    • Saturday Night

      Saturday Night:S wind around 19 kt. A chance of showers. Seas around 4 ft.

      S 19kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 2:28 pm EDT Mar 31, 2026
Forecast Valid: 4pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026

View Nearby Observations

Detailed Forecast

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

Tonight
SSW wind 19 to 21 kt. A slight chance of showers after 2am. Seas around 6 ft.
Wednesday
SW wind 10 to 14 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas 6 ft subsiding to 4 ft.
Wednesday Night
E wind 6 to 9 kt becoming ENE 11 to 16 kt in the evening. Showers and possibly a thunderstorm before midnight, then showers likely. Patchy fog after 2am. Seas 3 to 4 ft.
Thursday
ENE wind 17 to 19 kt. A chance of light rain, mainly before noon. Patchy fog. Seas around 4 ft.
Thursday Night
E wind 13 to 16 kt decreasing to 10 to 13 kt after midnight. A chance of light rain, mainly before midnight. Patchy fog. Seas 3 to 4 ft.
Friday
SE wind 7 to 12 kt becoming S in the morning. Areas of fog before noon. Seas 2 to 3 ft.
Friday Night
SSW wind 16 to 19 kt decreasing to 13 to 16 kt after midnight. Mostly cloudy. Seas 3 to 4 ft.
Saturday
SW wind 10 to 14 kt becoming S in the afternoon. Mostly sunny. Seas 2 to 3 ft.
Saturday Night
S wind around 19 kt. A chance of showers. 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: 40.57°N 73.57°W
Last Update: 2:28 pm EDT Mar 31, 2026
Forecast Valid: 4pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026
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