Alltwen Rainfall ForecastUnited KingdomWLNeath Port TalbotAlltwenToday 10 Dec35%Thu 11 Dec90%Fri 12 Dec10%Sat 13 Dec80%Sun 14 Dec85%Mon 15 Dec60%Alltwen rainfall forecast issued today at 6:35 am. Next forecast at approx. 8:35 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