Tonna Rainfall ForecastUnited KingdomWLNeath Port TalbotTonnaToday 16 May80%Sun 17 May70%Mon 18 May90%Tue 19 May85%Wed 20 May35%Thu 21 May10%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