Tonna Rainfall ForecastUnited KingdomWLNeath Port TalbotTonnaToday 16 Sep95%Wed 17 Sep95%Thu 18 Sep55%Fri 19 Sep55%Sat 20 Sep40%Sun 21 Sep30%Tonna rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 pm.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