Porthmadog Rainfall ForecastUnited KingdomWLGwyneddPorthmadogToday 17 Apr95%Sat 18 Apr55%Sun 19 Apr5%Mon 20 Apr5%Tue 21 Apr5%Wed 22 AprNo RainThu 23 AprNo RainPorthmadog rainfall forecast issued today at 7:36 am. Next forecast at approx. 9:36 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