Heol-ddu Rainfall ForecastUnited KingdomWLCarmarthenshireHeol-dduToday 9 Nov10%Tue 10 Nov90%Wed 11 Nov45%Thu 12 NovNo RainFri 13 Nov5%Sat 14 Nov40%Sun 15 Nov75%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Heol-ddu rainfall forecast issued today at 12:08 pm. Next forecast at approx. 2:08 am. Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads