Belfast Harbour Entrance Rainfall ForecastUnited KingdomNIBelfastBelfast Harbour EntranceToday 15 Jul90%Wed 16 Jul20%Thu 17 Jul65%Fri 18 Jul35%Sat 19 Jul55%Sun 20 Jul45%Mon 21 Jul35%Belfast Harbour Entrance rainfall forecast issued today at 7:37 pm. Next forecast at approx. 9:37 am.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