Belfast Harbour Entrance Rainfall ForecastUnited KingdomNIBelfastBelfast Harbour EntranceToday 15 JulNo RainThu 16 Jul5%Fri 17 Jul5%Sat 18 JulNo RainSun 19 Jul5%Mon 20 Jul10%Tue 21 Jul5%Belfast Harbour Entrance rainfall forecast issued today at 1:36 pm. Next forecast at approx. 3:36 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Rainfall Rainfall AccumulationCastor Bay (Lurgan) RadarGet WillyWeather+ to remove ads