Harlech Rainfall ForecastUnited KingdomWLGwyneddHarlechToday 18 Nov80%Wed 19 Nov55%Thu 20 Nov30%Fri 21 Nov75%Sat 22 Nov40%Sun 23 Nov50%Harlech rainfall forecast issued today at 6:37 am. Next forecast at approx. 8:37 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