Heol-ddu Rainfall ForecastUnited KingdomWLCarmarthenshireHeol-dduToday 13 Sep40%Sun 14 Sep95%Mon 15 Sep60%Tue 16 Sep90%Wed 17 Sep85%Thu 18 Sep20%Fri 19 Sep45%Heol-ddu rainfall forecast issued today at 1:36 pm. Next forecast at approx. 3:36 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