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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:ENE wind 8 to 13 kt becoming variable and less than 5 kt. A chance of rain, mainly after 5am. Areas of fog. Seas 7 ft subsiding to 5 ft.

      ENE 13kt⇓
      7ftWaves Subsiding

      Small Craft Advisory
      Small Craft Advisory

    • Memorial Day

      Memorial Day:SSE wind 5 to 8 kt becoming WSW in the afternoon. A chance of rain and thunderstorms before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then a slight chance of showers after 2pm. Seas 4 to 5 ft.

      SW 8kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday Night

      Monday Night:SW wind around 6 kt becoming variable and less than 5 kt after midnight. Cloudy. Seas around 4 ft.

      SW 6kt⇓
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Mostly cloudy. Seas 3 to 4 ft.

      Light Wind
      3-4ft

    • Tuesday Night

      Tuesday Night:SSW wind around 9 kt becoming WSW after midnight. Mostly cloudy. Seas around 3 ft.

      SSW 9kt
      3ft

    • Wednesday

      Wednesday:WSW wind 7 to 12 kt. Partly sunny. Seas around 3 ft.

      WSW 12kt
      3ft

    • Wednesday Night

      Wednesday Night:W wind 9 to 11 kt becoming NNW after midnight. Mostly cloudy. Seas around 3 ft.

      W 11kt
      3ft

    • Thursday

      Thursday:NNW wind around 8 kt. Mostly sunny. Seas 2 to 3 ft.

      NNW 8kt
      2-3ft

    • Thursday Night

      Thursday Night:NNW wind around 8 kt becoming NNE in the evening. Partly cloudy. Seas around 2 ft.

      NNW 8kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 2:19 pm EDT May 24, 2026
Forecast Valid: 6pm EDT May 24, 2026-6pm EDT May 31, 2026

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Detailed Forecast

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

Tonight
ENE wind 8 to 13 kt becoming variable and less than 5 kt. A chance of rain, mainly after 5am. Areas of fog. Seas 7 ft subsiding to 5 ft.
Memorial Day
SSE wind 5 to 8 kt becoming WSW in the afternoon. A chance of rain and thunderstorms before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then a slight chance of showers after 2pm. Seas 4 to 5 ft.
Monday Night
SW wind around 6 kt becoming variable and less than 5 kt after midnight. Cloudy. Seas around 4 ft.
Tuesday
Variable winds 5 kt or less. Mostly cloudy. Seas 3 to 4 ft.
Tuesday Night
SSW wind around 9 kt becoming WSW after midnight. Mostly cloudy. Seas around 3 ft.
Wednesday
WSW wind 7 to 12 kt. Partly sunny. Seas around 3 ft.
Wednesday Night
W wind 9 to 11 kt becoming NNW after midnight. Mostly cloudy. Seas around 3 ft.
Thursday
NNW wind around 8 kt. Mostly sunny. Seas 2 to 3 ft.
Thursday Night
NNW wind around 8 kt becoming NNE in the evening. Partly cloudy. Seas around 2 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: 2:19 pm EDT May 24, 2026
Forecast Valid: 6pm EDT May 24, 2026-6pm EDT May 31, 2026
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