Merthyr Mawr Rainfall ForecastUnited KingdomWLBridgendMerthyr MawrToday 2 Dec55%Wed 3 Dec70%Thu 4 Dec65%Fri 5 Dec75%Sat 6 Dec55%Sun 7 Dec40%Mon 8 Dec40%Merthyr Mawr rainfall forecast issued today at 12:36 pm. Next forecast at approx. 2:36 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Cobbacombe Cross (Devon) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads