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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Sunday

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

      Light Wind
      < 1ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming ESE 5 to 10 kt in the afternoon. A chance of showers, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

      ⇑ESE 10kt
      < 1ft

    • Monday Night

      Monday Night:S wind 11 to 14 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.

      S 14kt
      < 1ft

    • Tuesday

      Tuesday:N wind 6 to 8 kt. Showers likely before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers after 2pm. Seas 1 ft or less.

      N 8kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. A chance of showers before 8pm. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SSE 9kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 9:59 pm EDT Jun 20, 2026
Forecast Valid: 1am EDT Jun 21, 2026-6pm EDT Jun 27, 2026

View Nearby Observations

Detailed Forecast


Sunday
Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming ESE 5 to 10 kt in the afternoon. A chance of showers, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Monday Night
S wind 11 to 14 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.
Tuesday
N wind 6 to 8 kt. Showers likely before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers after 2pm. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. A chance of showers before 8pm. Seas 1 ft or less.
Wednesday
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. Sunny. 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: 9:59 pm EDT Jun 20, 2026
Forecast Valid: 1am EDT Jun 21, 2026-6pm EDT Jun 27, 2026
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