Portmuck Bay Rainfall ForecastUnited KingdomNILarnePortmuck BayToday 20 Jan95%Wed 21 Jan90%Thu 22 Jan80%Fri 23 Jan75%Sat 24 Jan45%Sun 25 Jan20%Portmuck Bay rainfall forecast issued today at 6:36 am. Next forecast at approx. 8:36 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