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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:SW wind 13 to 16 kt becoming WNW in the evening. Winds could gust as high as 22 kt. Mostly cloudy, then gradually becoming clear. Seas 3 to 4 ft.

      WNW 16kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday

      Saturday:W wind 14 to 19 kt, with gusts as high as 25 kt. Sunny. Seas 3 to 4 ft.

      W 19kt
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday Night

      Saturday Night:WNW wind 9 to 12 kt decreasing to 6 to 9 kt after midnight. Partly cloudy. Seas 2 to 3 ft.

      WNW 12kt⇓
      2-3ft

    • Sunday

      Sunday:W wind 5 to 10 kt becoming SSW in the afternoon. Mostly sunny. Seas around 2 ft.

      SSW 10kt
      2ft

    • Sunday Night

      Sunday Night:SSW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas around 2 ft.

      SSW 7kt⇓
      2ft

    • Monday

      Monday:SE wind 8 to 13 kt increasing to 17 to 22 kt. Showers and possibly a thunderstorm. Seas 2 ft building to 5 ft.

      ⇑SE 22kt
      Waves Building5ft

    • Monday Night

      Monday Night:S wind 21 to 24 kt becoming WSW 17 to 20 kt after midnight. Winds could gust as high as 30 kt. Showers, mainly before 2am. Seas 7 ft subsiding to 5 ft.

      S 24kt⇓
      7ftWaves Subsiding

    • Tuesday

      Tuesday:NW wind 9 to 12 kt becoming W in the afternoon. A chance of showers. Seas 3 to 4 ft.

      NW 12kt
      3-4ft

    • Tuesday Night

      Tuesday Night:W wind around 8 kt becoming NW after midnight. Partly cloudy. Seas around 3 ft.

      W 8kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 4:47 pm EDT Jun 19, 2026
Forecast Valid: 5pm EDT Jun 19, 2026-6pm EDT Jun 26, 2026

View Nearby Observations

Detailed Forecast

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

Tonight
SW wind 13 to 16 kt becoming WNW in the evening. Winds could gust as high as 22 kt. Mostly cloudy, then gradually becoming clear. Seas 3 to 4 ft.
Saturday
W wind 14 to 19 kt, with gusts as high as 25 kt. Sunny. Seas 3 to 4 ft.
Saturday Night
WNW wind 9 to 12 kt decreasing to 6 to 9 kt after midnight. Partly cloudy. Seas 2 to 3 ft.
Sunday
W wind 5 to 10 kt becoming SSW in the afternoon. Mostly sunny. Seas around 2 ft.
Sunday Night
SSW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas around 2 ft.
Monday
SE wind 8 to 13 kt increasing to 17 to 22 kt. Showers and possibly a thunderstorm. Seas 2 ft building to 5 ft.
Monday Night
S wind 21 to 24 kt becoming WSW 17 to 20 kt after midnight. Winds could gust as high as 30 kt. Showers, mainly before 2am. Seas 7 ft subsiding to 5 ft.
Tuesday
NW wind 9 to 12 kt becoming W in the afternoon. A chance of showers. Seas 3 to 4 ft.
Tuesday Night
W wind around 8 kt becoming NW after midnight. Partly cloudy. Seas around 3 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: 4:47 pm EDT Jun 19, 2026
Forecast Valid: 5pm EDT Jun 19, 2026-6pm EDT Jun 26, 2026
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