Merthyr Mawr Rainfall ForecastUnited KingdomWLBridgendMerthyr MawrToday 1 Jun45%Mon 2 Jun85%Tue 3 Jun90%Wed 4 Jun45%Thu 5 Jun75%Fri 6 Jun50%Merthyr Mawr rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 pm.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