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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:S wind 15 to 20 kt increasing to 20 to 25 kt in the afternoon. Mostly sunny. Seas 4 ft building to 6 ft.

      ⇑S 25kt
      Waves Building6ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday Night

      Tuesday Night:SSW wind 23 to 27 kt, with gusts as high as 33 kt. Increasing clouds. Seas 7 to 8 ft.

      SSW 27kt
      7-8ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:SSW wind around 25 kt, with gusts as high as 31 kt. Showers, mainly after 2pm. Seas around 7 ft.

      SSW 25kt
      7ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:SSW wind 19 to 24 kt becoming W 14 to 19 kt after midnight. Rain and possibly a thunderstorm, mainly before 2am, then showers likely and possibly a thunderstorm after 2am. Seas 7 ft subsiding to 5 ft.

      SSW 24kt⇓
      7ftWaves Subsiding

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:NNW wind 8 to 11 kt becoming W in the afternoon. Showers likely, mainly before 8am. Seas 3 to 4 ft.

      NNW 11kt
      3-4ft

    • Thursday Night

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

      NW 11kt
      3ft

    • Friday

      Friday:WNW wind 12 to 14 kt becoming WSW in the afternoon. Sunny. Seas around 3 ft.

      WSW 14kt
      3ft

    • Friday Night

      Friday Night:SW wind 8 to 12 kt. Partly cloudy. Seas around 3 ft.

      SW 12kt
      3ft

    • Saturday

      Saturday:S wind 11 to 14 kt increasing to 15 to 18 kt in the afternoon. A chance of showers. Seas 3 to 4 ft.

      ⇑S 18kt
      3-4ft


Associated Zone Forecast which includes this point

Last Update: 1:49 am EDT May 5, 2026
Forecast Valid: 4am EDT May 5, 2026-6pm EDT May 11, 2026

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Detailed Forecast

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

Tuesday
S wind 15 to 20 kt increasing to 20 to 25 kt in the afternoon. Mostly sunny. Seas 4 ft building to 6 ft.
Tuesday Night
SSW wind 23 to 27 kt, with gusts as high as 33 kt. Increasing clouds. Seas 7 to 8 ft.
Wednesday
SSW wind around 25 kt, with gusts as high as 31 kt. Showers, mainly after 2pm. Seas around 7 ft.
Wednesday Night
SSW wind 19 to 24 kt becoming W 14 to 19 kt after midnight. Rain and possibly a thunderstorm, mainly before 2am, then showers likely and possibly a thunderstorm after 2am. Seas 7 ft subsiding to 5 ft.
Thursday
NNW wind 8 to 11 kt becoming W in the afternoon. Showers likely, mainly before 8am. Seas 3 to 4 ft.
Thursday Night
W wind 9 to 11 kt becoming NW after midnight. Mostly cloudy. Seas around 3 ft.
Friday
WNW wind 12 to 14 kt becoming WSW in the afternoon. Sunny. Seas around 3 ft.
Friday Night
SW wind 8 to 12 kt. Partly cloudy. Seas around 3 ft.
Saturday
S wind 11 to 14 kt increasing to 15 to 18 kt in the afternoon. A chance of showers. Seas 3 to 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: 1:49 am EDT May 5, 2026
Forecast Valid: 4am EDT May 5, 2026-6pm EDT May 11, 2026
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