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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:SW wind 11 to 14 km/h becoming W 8 to 11 km/h after midnight. Patchy fog after 2am.  Seas 1 m or less.

      SW 14km/h⇓
      < 1m

    • Thursday

      Thursday:NW wind 8 to 11 km/h becoming SSW 19 to 24 km/h. Winds could gust as high as 35 km/h. A chance of showers and thunderstorms after 5pm.  Patchy fog before 9am.  Seas 1 m or less.

      ⇑SSW 24km/h
      < 1m

    • Thursday Night

      Thursday Night:W wind 15 to 18 km/h becoming NW 11 to 14 km/h in the evening. A chance of showers and thunderstorms before 11pm.   Seas 1 m or less.

      W 18km/h⇓
      < 1m

    • Independence Day

      Independence Day:NNW wind 14 to 17 km/h becoming W 18 to 21 km/h in the afternoon. Winds could gust as high as 34 km/h. Sunny. Seas 1 m or less.

      ⇑W 21km/h
      < 1m

    • Friday Night

      Friday Night:W wind 8 to 11 km/h becoming N after midnight. Mostly clear. Seas 1 m or less.

      W 11km/h
      < 1m

    • Saturday

      Saturday:NNE wind 8 to 11 km/h becoming S 11 to 14 km/h in the afternoon. Sunny. Seas 1 m or less.

      ⇑S 14km/h
      < 1m

    • Saturday Night

      Saturday Night:SW wind 14 to 18 km/h. Partly cloudy. Seas 1 m or less.

      SW 18km/h
      < 1m

    • Sunday

      Sunday:SW wind 13 to 18 km/h becoming S 19 to 24 km/h in the afternoon. Mostly sunny. Seas 1 m or less.

      ⇑S 24km/h
      < 1m

    • Sunday Night

      Sunday Night:SW wind 21 to 26 km/h decreasing to 16 to 21 km/h after midnight. Winds could gust as high as 34 km/h. Partly cloudy. Seas 1 m or less.

      SW 26km/h⇓
      < 1m


Associated Zone Forecast which includes this point

Last Update: 7:40 pm EDT Jul 2, 2025
Forecast Valid: 11pm EDT Jul 2, 2025-6pm EDT Jul 9, 2025

View Nearby Observations

Detailed Forecast


Overnight
SW wind 11 to 14 km/h becoming W 8 to 11 km/h after midnight. Patchy fog after 2am. Seas 1 m or less.
Thursday
NW wind 8 to 11 km/h becoming SSW 19 to 24 km/h. Winds could gust as high as 35 km/h. A chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Seas 1 m or less.
Thursday Night
W wind 15 to 18 km/h becoming NW 11 to 14 km/h in the evening. A chance of showers and thunderstorms before 11pm. Seas 1 m or less.
Independence Day
NNW wind 14 to 17 km/h becoming W 18 to 21 km/h in the afternoon. Winds could gust as high as 34 km/h. Sunny. Seas 1 m or less.
Friday Night
W wind 8 to 11 km/h becoming N after midnight. Mostly clear. Seas 1 m or less.
Saturday
NNE wind 8 to 11 km/h becoming S 11 to 14 km/h in the afternoon. Sunny. Seas 1 m or less.
Saturday Night
SW wind 14 to 18 km/h. Partly cloudy. Seas 1 m or less.
Sunday
SW wind 13 to 18 km/h becoming S 19 to 24 km/h in the afternoon. Mostly sunny. Seas 1 m or less.
Sunday Night
SW wind 21 to 26 km/h decreasing to 16 to 21 km/h after midnight. Winds could gust as high as 34 km/h. Partly cloudy. Seas 1 m 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: 7:40 pm EDT Jul 2, 2025
Forecast Valid: 11pm EDT Jul 2, 2025-6pm EDT Jul 9, 2025
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