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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Monday

      Monday:NNE wind 8 to 11 kt becoming SSE in the afternoon. Sunny. Seas 1 ft or less.

      SSE 11kt
      < 1ft

    • Monday Night

      Monday Night:S wind 6 to 8 kt becoming SW after midnight. Mostly clear. Seas 1 ft or less.

      S 8kt
      < 1ft

    • Tuesday

      Tuesday:WSW wind 6 to 9 kt becoming S 12 to 15 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑S 15kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSW wind 11 to 14 kt decreasing to 8 to 11 kt after midnight. Winds could gust as high as 20 kt. Partly cloudy. Seas 1 ft or less.

      SSW 14kt⇓
      < 1ft

    • Wednesday

      Wednesday:S wind 9 to 14 kt. A chance of showers, with thunderstorms also possible after 5pm. Seas 1 ft or less.

      S 14kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SSW wind 9 to 14 kt. A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Seas 1 ft or less.

      SSW 14kt
      < 1ft

    • Thursday

      Thursday:SW wind 8 to 10 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

      SW 10kt
      < 1ft

    • Thursday Night

      Thursday Night:S wind 5 to 7 kt becoming variable and less than 5 kt. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.

      S 7kt⇓
      < 1ft

    • Friday

      Friday:Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. Mostly sunny. Seas 1 ft or less.

      ⇑S 10kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 3:54 am EDT Jun 8, 2026
Forecast Valid: 4am EDT Jun 8, 2026-6pm EDT Jun 14, 2026

View Nearby Observations

Detailed Forecast


Monday
NNE wind 8 to 11 kt becoming SSE in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
S wind 6 to 8 kt becoming SW after midnight. Mostly clear. Seas 1 ft or less.
Tuesday
WSW wind 6 to 9 kt becoming S 12 to 15 kt in the afternoon. Sunny. Seas 1 ft or less.
Tuesday Night
SSW wind 11 to 14 kt decreasing to 8 to 11 kt after midnight. Winds could gust as high as 20 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
S wind 9 to 14 kt. A chance of showers, with thunderstorms also possible after 5pm. Seas 1 ft or less.
Wednesday Night
SSW wind 9 to 14 kt. A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Seas 1 ft or less.
Thursday
SW wind 8 to 10 kt. A chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Thursday Night
S wind 5 to 7 kt becoming variable and less than 5 kt. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.
Friday
Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. Mostly 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: 40.62°N 73.59°W
Last Update: 3:54 am EDT Jun 8, 2026
Forecast Valid: 4am EDT Jun 8, 2026-6pm EDT Jun 14, 2026
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