Portmuck Bay Rainfall ForecastUnited KingdomNILarnePortmuck BayToday 4 Dec90%Fri 5 Dec100%Sat 6 Dec55%Sun 7 Dec55%Mon 8 Dec85%Tue 9 Dec20%Portmuck Bay rainfall forecast issued today at 6:35 am. Next forecast at approx. 8:35 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