Tonmawr Rainfall ForecastUnited KingdomWLNeath Port TalbotTonmawrToday 12 May55%Wed 13 May75%Thu 14 May40%Fri 15 May10%Sat 16 May20%Sun 17 May70%Tonmawr rainfall forecast issued yesterday at 7:36 pm. Next forecast at approx. 9:36 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