Dundrum Harbour Entrance Rainfall ForecastUnited KingdomNIDownDundrum Harbour EntranceToday 17 Sep10%Thu 18 Sep80%Fri 19 Sep15%Sat 20 Sep35%Sun 21 Sep10%Mon 22 Sep10%Dundrum Harbour Entrance rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Castor Bay (Lurgan) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads