National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:SSW wind 5 to 9 kt becoming SE in the afternoon. A chance of showers after 4pm. Seas around 2 ft.

      SE 9kt
      2ft

    • Tonight

      Tonight:E wind 11 to 13 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Some of the storms could produce heavy rainfall. Seas around 2 ft.

      E 13kt
      2ft

    • Monday

      Monday:E wind around 19 kt. Showers and possibly a thunderstorm. Seas 3 to 4 ft.

      E 19kt
      3-4ft

    • Monday Night

      Monday Night:E wind 16 to 20 kt. Showers and possibly a thunderstorm. Seas around 4 ft.

      E 20kt
      4ft

    • Tuesday

      Tuesday:NE wind around 16 kt. Showers likely and possibly a thunderstorm before noon, then a chance of showers between noon and 2pm, then a chance of showers and thunderstorms after 2pm. Seas around 4 ft.

      NE 16kt
      4ft

    • Tuesday Night

      Tuesday Night:NE wind 12 to 15 kt. A chance of showers before midnight. Seas 3 to 4 ft.

      NE 15kt
      3-4ft

    • Wednesday

      Wednesday:NE wind 7 to 10 kt becoming ESE in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas around 3 ft.

      NE 10kt
      3ft

    • Wednesday Night

      Wednesday Night:SSE wind around 7 kt becoming SW after midnight. Partly cloudy. Seas 2 to 3 ft.

      SSE 7kt
      2-3ft

    • Thursday

      Thursday:WSW wind 6 to 9 kt becoming SSW 10 to 13 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.

      ⇑SSW 13kt
      2-3ft


Associated Zone Forecast which includes this point

Last Update: 3:53 am EDT Jul 5, 2026
Forecast Valid: 9am EDT Jul 5, 2026-6pm EDT Jul 11, 2026

View Nearby Observations

Detailed Forecast


Today
SSW wind 5 to 9 kt becoming SE in the afternoon. A chance of showers after 4pm. Seas around 2 ft.
Tonight
E wind 11 to 13 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Some of the storms could produce heavy rainfall. Seas around 2 ft.
Monday
E wind around 19 kt. Showers and possibly a thunderstorm. Seas 3 to 4 ft.
Monday Night
E wind 16 to 20 kt. Showers and possibly a thunderstorm. Seas around 4 ft.
Tuesday
NE wind around 16 kt. Showers likely and possibly a thunderstorm before noon, then a chance of showers between noon and 2pm, then a chance of showers and thunderstorms after 2pm. Seas around 4 ft.
Tuesday Night
NE wind 12 to 15 kt. A chance of showers before midnight. Seas 3 to 4 ft.
Wednesday
NE wind 7 to 10 kt becoming ESE in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas around 3 ft.
Wednesday Night
SSE wind around 7 kt becoming SW after midnight. Partly cloudy. Seas 2 to 3 ft.
Thursday
WSW wind 6 to 9 kt becoming SSW 10 to 13 kt in the afternoon. Mostly sunny. Seas 2 to 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: 3:53 am EDT Jul 5, 2026
Forecast Valid: 9am EDT Jul 5, 2026-6pm EDT Jul 11, 2026
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