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New York, NY Local Forecast Office

3NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

      Today:Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑S 9kt
      < 1ft

    • Tonight

      Tonight:S wind 8 to 10 kt. A chance of showers and thunderstorms between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Seas 1 ft or less.

      S 10kt
      < 1ft

    • Friday

      Friday:S wind around 9 kt becoming SW in the afternoon. Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 11am. Seas 1 ft or less.

      SW 9kt
      < 1ft

    • Friday Night

      Friday Night:SW wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers after 2am. Seas 1 ft or less.

      SW 6kt⇓
      < 1ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming ESE around 6 kt in the afternoon. Showers likely, mainly between 8am and 2pm. Seas 1 ft or less.

      ⇑ESE 6kt
      < 1ft

    • Saturday Night

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

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming SE around 6 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑SE 6kt
      < 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 S 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      ⇑S 8kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:24 am EDT Jun 25, 2026
Forecast Valid: 9am EDT Jun 25, 2026-6pm EDT Jul 1, 2026

View Nearby Observations

Detailed Forecast


Today
Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Tonight
S wind 8 to 10 kt. A chance of showers and thunderstorms between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Seas 1 ft or less.
Friday
S wind around 9 kt becoming SW in the afternoon. Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 11am. Seas 1 ft or less.
Friday Night
SW wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers after 2am. Seas 1 ft or less.
Saturday
Variable winds less than 5 kt becoming ESE around 6 kt in the afternoon. Showers likely, mainly between 8am and 2pm. Seas 1 ft or less.
Saturday Night
Variable winds 5 kt or less. A chance of showers before 8pm. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming SE around 6 kt in the afternoon. Mostly sunny. 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 S 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Winds and waves 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: 40.69°N 73.26°W
Last Update: 2:24 am EDT Jun 25, 2026
Forecast Valid: 9am EDT Jun 25, 2026-6pm EDT Jul 1, 2026
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