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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]

    • Tonight

      Tonight:SSW wind 21 to 24 kt. Mostly cloudy. Seas 6 to 7 ft.

      SSW 24kt
      6-7ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:SW wind 14 to 17 kt decreasing to 11 to 14 kt in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas 5 to 6 ft.

      SW 17kt⇓
      5-6ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:E wind 7 to 10 kt becoming ENE 12 to 17 kt in the evening. Showers and possibly a thunderstorm before midnight, then showers likely. Patchy fog after 2am. Seas 3 to 4 ft.

      ⇑ENE 17kt
      3-4ft

    • Thursday

      Thursday:ENE wind around 21 kt. A chance of light rain, mainly before noon. Patchy fog. Seas 4 to 5 ft.

      ENE 21kt
      4-5ft

    • Thursday Night

      Thursday Night:E wind 14 to 17 kt decreasing to 11 to 14 kt after midnight. A slight chance of light rain after 8pm. Patchy fog. Seas 3 to 4 ft.

      E 17kt⇓
      3-4ft

    • Friday

      Friday:SSE wind 8 to 11 kt becoming SSW 12 to 15 kt in the afternoon. Areas of fog before noon. Seas around 3 ft.

      ⇑SSW 15kt
      3ft

    • Friday Night

      Friday Night:SW wind 19 to 22 kt decreasing to 15 to 18 kt after midnight. Mostly cloudy. Seas 4 to 5 ft.

      SW 22kt⇓
      4-5ft

    • Saturday

      Saturday:SW wind 12 to 15 kt becoming S in the afternoon. Mostly sunny. Seas around 3 ft.

      S 15kt
      3ft

    • Saturday Night

      Saturday Night:S wind 21 to 25 kt. A chance of showers. Seas 4 to 5 ft.

      S 25kt
      4-5ft


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 21 to 24 kt. Mostly cloudy. Seas 6 to 7 ft.
Wednesday
SW wind 14 to 17 kt decreasing to 11 to 14 kt in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas 5 to 6 ft.
Wednesday Night
E wind 7 to 10 kt becoming ENE 12 to 17 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 around 21 kt. A chance of light rain, mainly before noon. Patchy fog. Seas 4 to 5 ft.
Thursday Night
E wind 14 to 17 kt decreasing to 11 to 14 kt after midnight. A slight chance of light rain after 8pm. Patchy fog. Seas 3 to 4 ft.
Friday
SSE wind 8 to 11 kt becoming SSW 12 to 15 kt in the afternoon. Areas of fog before noon. Seas around 3 ft.
Friday Night
SW wind 19 to 22 kt decreasing to 15 to 18 kt after midnight. Mostly cloudy. Seas 4 to 5 ft.
Saturday
SW wind 12 to 15 kt becoming S in the afternoon. Mostly sunny. Seas around 3 ft.
Saturday Night
S wind 21 to 25 kt. A chance of showers. Seas 4 to 5 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 pm EDT Mar 31, 2026
Forecast Valid: 4pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026
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