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New York, NY Local Forecast Office

49NM SSE Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:E wind 9 to 12 kt becoming SSE after midnight. Patchy fog after 8pm. Seas 2 to 3 ft.

      SSE 12kt
      2-3ft

    • Sunday

      Sunday:S wind 19 to 22 kt becoming NW in the afternoon. Winds could gust as high as 29 kt. Showers, mainly after 11am. Patchy fog before 11am. Seas 4 to 5 ft.

      NW 22kt
      4-5ft

    • Sunday Night

      Sunday Night:WNW wind 10 to 14 kt, with gusts as high as 21 kt. Showers likely before 8pm. Seas 3 to 4 ft.

      WNW 14kt
      3-4ft

    • Monday

      Monday:NW wind around 14 kt. A chance of showers, mainly after 2pm. Seas around 3 ft.

      NW 14kt
      3ft

    • Monday Night

      Monday Night:N wind 12 to 17 kt. A chance of showers, mainly before 8pm. Seas around 3 ft.

      N 17kt
      3ft

    • Tuesday

      Tuesday:N wind 10 to 15 kt becoming NW 5 to 8 kt in the afternoon. Sunny. Seas 2 to 3 ft.

      N 15kt⇓
      2-3ft

    • Tuesday Night

      Tuesday Night:SSW wind 10 to 13 kt increasing to 14 to 17 kt after midnight. Partly cloudy. Seas 2 to 3 ft.

      ⇑SSW 17kt
      2-3ft

    • Wednesday

      Wednesday:SSW wind 13 to 18 kt. A chance of showers. Seas 4 to 5 ft.

      SSW 18kt
      4-5ft

    • Wednesday Night

      Wednesday Night:WSW wind around 12 kt becoming N after midnight. Partly cloudy. Seas 3 to 4 ft.

      NNW 12kt
      3-4ft


Associated Zone Forecast which includes this point

Last Update: 2:19 pm EDT Apr 18, 2026
Forecast Valid: 6pm EDT Apr 18, 2026-6pm EDT Apr 25, 2026

View Nearby Observations

Detailed Forecast


Tonight
E wind 9 to 12 kt becoming SSE after midnight. Patchy fog after 8pm. Seas 2 to 3 ft.
Sunday
S wind 19 to 22 kt becoming NW in the afternoon. Winds could gust as high as 29 kt. Showers, mainly after 11am. Patchy fog before 11am. Seas 4 to 5 ft.
Sunday Night
WNW wind 10 to 14 kt, with gusts as high as 21 kt. Showers likely before 8pm. Seas 3 to 4 ft.
Monday
NW wind around 14 kt. A chance of showers, mainly after 2pm. Seas around 3 ft.
Monday Night
N wind 12 to 17 kt. A chance of showers, mainly before 8pm. Seas around 3 ft.
Tuesday
N wind 10 to 15 kt becoming NW 5 to 8 kt in the afternoon. Sunny. Seas 2 to 3 ft.
Tuesday Night
SSW wind 10 to 13 kt increasing to 14 to 17 kt after midnight. Partly cloudy. Seas 2 to 3 ft.
Wednesday
SSW wind 13 to 18 kt. A chance of showers. Seas 4 to 5 ft.
Wednesday Night
WSW wind around 12 kt becoming N after midnight. Partly cloudy. Seas 3 to 4 ft.

*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°N 72.73°W
Last Update: 2:19 pm EDT Apr 18, 2026
Forecast Valid: 6pm EDT Apr 18, 2026-6pm EDT Apr 25, 2026
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