Bon-y-maen Rainfall ForecastUnited KingdomWLSwanseaBon-y-maenToday 17 Sep10%Fri 18 Sep85%Sat 19 Sep80%Sun 20 Sep40%Mon 21 Sep20%Tue 22 Sep10%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Bon-y-maen rainfall forecast issued today at 1:08 am. Next forecast at approx. 3:08 pm. Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads