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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
    • Today

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

      ⇑ENE 6kt
      < 1ft

    • Tonight

      Tonight:SE wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.

      SE 8kt⇓
      < 1ft

    • Saturday

      Saturday:NE wind 5 to 9 kt. Sunny. Seas 1 ft or less.

      NE 9kt
      < 1ft

    • Saturday Night

      Saturday Night:E wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.

      E 8kt⇓
      < 1ft

    • Sunday

      Sunday:NNE wind around 6 kt becoming E in the afternoon. Sunny. Seas 1 ft or less.

      NNE 6kt
      < 1ft

    • Sunday Night

      Sunday Night:SSE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

      SSE 7kt⇓
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑S 8kt
      < 1ft

    • Monday Night

      Monday Night:S wind 6 to 9 kt. A chance of showers.   Seas 1 ft or less.

      S 9kt
      < 1ft

    • Tuesday

      Tuesday:SSE wind 6 to 11 kt. Showers likely, with thunderstorms also possible after 2pm.   Seas 1 ft or less.

      SSE 11kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:41 am EDT Jul 24, 2026
Forecast Valid: 7am EDT Jul 24, 2026-6pm EDT Jul 30, 2026

View Nearby Observations

Detailed Forecast


Today
Variable winds less than 5 kt becoming ENE around 6 kt in the afternoon. Sunny. Seas 1 ft or less.
Tonight
SE wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 1 ft or less.
Saturday
NE wind 5 to 9 kt. Sunny. Seas 1 ft or less.
Saturday Night
E wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.
Sunday
NNE wind around 6 kt becoming E in the afternoon. Sunny. Seas 1 ft or less.
Sunday Night
SSE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Monday Night
S wind 6 to 9 kt. A chance of showers. Seas 1 ft or less.
Tuesday
SSE wind 6 to 11 kt. Showers likely, with thunderstorms also possible after 2pm. 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: 2:41 am EDT Jul 24, 2026
Forecast Valid: 7am EDT Jul 24, 2026-6pm EDT Jul 30, 2026
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