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

Hazardous Weather Conditions

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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:W wind around 6 kt. Sunny. Seas 1 ft or less.

      W 6kt
      < 1ft

    • Tonight

      Tonight:SSW wind 5 to 9 kt becoming WNW after midnight. Clear. Seas 1 ft or less.

      SSW 9kt
      < 1ft

    • Friday

      Friday:Variable winds less than 5 kt becoming WNW around 6 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑WNW 6kt
      < 1ft

    • Friday Night

      Friday Night:SW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas 1 ft or less.

      SW 7kt⇓
      < 1ft

    • Independence Day

      Independence Day:W wind 5 to 8 kt. Showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      W 8kt
      < 1ft

    • Saturday Night

      Saturday Night:WNW wind 5 to 7 kt becoming N after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.

      WNW 7kt
      < 1ft

    • Sunday

      Sunday:Variable winds 5 kt or less. A chance of showers after 2pm. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Sunday Night

      Sunday Night:SSE wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Showers likely. Seas 1 ft or less.

      SSE 7kt⇓
      < 1ft

    • Monday

      Monday:E wind 7 to 10 kt. Showers likely. Seas 1 ft or less.

      E 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:25 pm EDT Jul 2, 2026
Forecast Valid: 3pm EDT Jul 2, 2026-6pm EDT Jul 9, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
W wind around 6 kt. Sunny. Seas 1 ft or less.
Tonight
SSW wind 5 to 9 kt becoming WNW after midnight. Clear. Seas 1 ft or less.
Friday
Variable winds less than 5 kt becoming WNW around 6 kt in the afternoon. Sunny. Seas 1 ft or less.
Friday Night
SW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas 1 ft or less.
Independence Day
W wind 5 to 8 kt. Showers likely and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Saturday Night
WNW wind 5 to 7 kt becoming N after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.
Sunday
Variable winds 5 kt or less. A chance of showers after 2pm. Seas 1 ft or less.
Sunday Night
SSE wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Showers likely. Seas 1 ft or less.
Monday
E wind 7 to 10 kt. Showers likely. Seas 1 ft or less.

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: 40.91°N 73.39°W
Last Update: 2:25 pm EDT Jul 2, 2026
Forecast Valid: 3pm EDT Jul 2, 2026-6pm EDT Jul 9, 2026
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