Sarn Gynfelyn Rainfall ForecastUnited KingdomWLCeredigionSarn GynfelynToday 18 Jul5%Sun 19 Jul5%Mon 20 JulNo RainTue 21 Jul5%Wed 22 Jul15%Thu 23 Jul15%Fri 24 Jul15%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Sarn Gynfelyn rainfall forecast issued today at 5:12 pm. Next forecast at approx. . Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads