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New York, NY Local Forecast Office

3NM SSW Islip NY

Marine Point Forecast

[NOTICE]

    • Today

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

      ⇑SSW 9kt
      < 1ft

    • Tonight

      Tonight:SSW wind 5 to 8 kt becoming WSW after midnight. Partly cloudy. Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming NW around 6 kt in the afternoon. Showers likely and possibly a thunderstorm, mainly after 2pm. Seas 1 ft or less.

      ⇑NW 6kt
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds less than 5 kt becoming N around 6 kt after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.

      ⇑N 6kt
      < 1ft

    • Friday

      Friday:N wind around 8 kt becoming E in the afternoon. Mostly sunny. Seas 1 ft or less.

      N 8kt
      < 1ft

    • Friday Night

      Friday Night:ESE wind around 6 kt. A chance of showers after 2am. Seas 1 ft or less.

      ESE 6kt
      < 1ft

    • Saturday

      Saturday:E wind 9 to 11 kt. Showers likely, mainly after 2pm. Seas 1 ft or less.

      E 11kt
      < 1ft

    • Saturday Night

      Saturday Night:E wind 6 to 8 kt. Showers likely. Seas 1 ft or less.

      E 8kt
      < 1ft

    • Sunday

      Sunday:ENE wind 5 to 9 kt becoming SSW in the morning. A chance of showers. Seas 1 ft or less.

      SSW 9kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 5:30 am EDT Aug 19, 2026
Forecast Valid: 7am EDT Aug 19, 2026-6pm EDT Aug 25, 2026

View Nearby Observations

Detailed Forecast


Today
Variable winds less than 5 kt becoming SSW 5 to 9 kt in the afternoon. Sunny. Seas 1 ft or less.
Tonight
SSW wind 5 to 8 kt becoming WSW after midnight. Partly cloudy. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming NW around 6 kt in the afternoon. Showers likely and possibly a thunderstorm, mainly after 2pm. Seas 1 ft or less.
Thursday Night
Variable winds less than 5 kt becoming N around 6 kt after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.
Friday
N wind around 8 kt becoming E in the afternoon. Mostly sunny. Seas 1 ft or less.
Friday Night
ESE wind around 6 kt. A chance of showers after 2am. Seas 1 ft or less.
Saturday
E wind 9 to 11 kt. Showers likely, mainly after 2pm. Seas 1 ft or less.
Saturday Night
E wind 6 to 8 kt. Showers likely. Seas 1 ft or less.
Sunday
ENE wind 5 to 9 kt becoming SSW in the morning. A chance of showers. 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: 5:30 am EDT Aug 19, 2026
Forecast Valid: 7am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
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