Cwmtaf Rainfall ForecastUnited KingdomWLMerthyr TydfilCwmtafToday 28 Oct90%Thu 29 Oct15%Fri 30 Oct15%Sat 31 Oct15%Sun 1 Nov15%Mon 2 Nov5%Tue 3 Nov15%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Cwmtaf rainfall forecast issued today at 12:11 pm. Next forecast at approx. 2:11 am. Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads