Cwmtaf Rainfall ForecastUnited KingdomWLMerthyr TydfilCwmtafToday 31 Jan95%Sun 1 Feb80%Mon 2 Feb55%Tue 3 Feb55%Wed 4 Feb25%Thu 5 Feb25%Fri 6 Feb20%Cwmtaf rainfall forecast issued today at 12:37 pm. Next forecast at approx. 2:37 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Crug-y-Gorllwyn (Carmarthenshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads