Cwmtaf Rainfall ForecastUnited KingdomWLMerthyr TydfilCwmtafToday 12 Sep95%Sun 13 Sep90%Mon 14 Sep80%Tue 15 Sep80%Wed 16 Sep85%Thu 17 Sep60%Fri 18 Sep50%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Cwmtaf rainfall forecast issued today at 1:08 pm. Next forecast at approx. 3:08 am. Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads