Dundrum Harbour Entrance Rainfall ForecastUnited KingdomNIDownDundrum Harbour EntranceToday 17 Jul45%Fri 18 Jul50%Sat 19 Jul15%Sun 20 Jul60%Mon 21 Jul35%Tue 22 Jul20%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