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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]

    • Today

      Today:N wind 5 to 8 kt becoming E 10 to 13 kt in the afternoon. A slight chance of rain after 5pm. Seas 2 to 3 ft.

      ⇑E 13kt
      2-3ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:E wind 17 to 20 kt decreasing to 13 to 16 kt after midnight. A chance of rain, with thunderstorms also possible after 5am. Seas 3 to 4 ft.

      E 20kt⇓
      3-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Sunday

      Sunday:S wind 17 to 21 kt becoming SW in the afternoon. Winds could gust as high as 28 kt. A chance of rain and thunderstorms, then rain after 11am. Seas 4 to 5 ft.

      SSW 21kt
      4-5ft

    • Sunday Night

      Sunday Night:W wind around 14 kt becoming NW after midnight. A chance of rain before 8pm. Seas 3 to 4 ft.

      W 14kt
      3-4ft

    • Monday

      Monday:WNW wind 11 to 13 kt becoming WSW in the afternoon. Sunny. Seas 3 to 4 ft.

      WNW 13kt
      3-4ft

    • Monday Night

      Monday Night:W wind 7 to 9 kt. Partly cloudy. Seas 2 to 3 ft.

      W 9kt
      2-3ft

    • Tuesday

      Tuesday:W wind 12 to 14 kt. Mostly sunny. Seas around 2 ft.

      W 14kt
      2ft

    • Tuesday Night

      Tuesday Night:N wind 13 to 16 kt. Mostly clear. Seas around 2 ft.

      N 16kt
      2ft

    • Wednesday

      Wednesday:NNE wind 6 to 10 kt becoming SSE in the afternoon. Sunny. Seas around 1 ft.

      NNE 10kt
      1ft


Associated Zone Forecast which includes this point

Last Update: 2:33 am EDT Apr 4, 2026
Forecast Valid: 9am EDT Apr 4, 2026-6pm EDT Apr 10, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

Today
N wind 5 to 8 kt becoming E 10 to 13 kt in the afternoon. A slight chance of rain after 5pm. Seas 2 to 3 ft.
Tonight
E wind 17 to 20 kt decreasing to 13 to 16 kt after midnight. A chance of rain, with thunderstorms also possible after 5am. Seas 3 to 4 ft.
Sunday
S wind 17 to 21 kt becoming SW in the afternoon. Winds could gust as high as 28 kt. A chance of rain and thunderstorms, then rain after 11am. Seas 4 to 5 ft.
Sunday Night
W wind around 14 kt becoming NW after midnight. A chance of rain before 8pm. Seas 3 to 4 ft.
Monday
WNW wind 11 to 13 kt becoming WSW in the afternoon. Sunny. Seas 3 to 4 ft.
Monday Night
W wind 7 to 9 kt. Partly cloudy. Seas 2 to 3 ft.
Tuesday
W wind 12 to 14 kt. Mostly sunny. Seas around 2 ft.
Tuesday Night
N wind 13 to 16 kt. Mostly clear. Seas around 2 ft.
Wednesday
NNE wind 6 to 10 kt becoming SSE in the afternoon. Sunny. Seas around 1 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: 2:33 am EDT Apr 4, 2026
Forecast Valid: 9am EDT Apr 4, 2026-6pm EDT Apr 10, 2026
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