Garth (Porthmadog) Rainfall ForecastUnited KingdomWLGwyneddGarth (Porthmadog)Today 16 Jun90%Wed 17 Jun85%Thu 18 Jun60%Fri 19 Jun60%Sat 20 Jun15%Sun 21 Jun15%Mon 22 Jun15%Garth (Porthmadog) rainfall forecast issued today at 1:36 pm. Next forecast at approx. 3:36 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Crug-y-Gorllwyn (Carmarthenshire) Radar Rainfall Rainfall AccumulationGet WillyWeather+ to remove ads