Onllwyn Rainfall ForecastUnited KingdomWLNeath Port TalbotOnllwynToday 5 Aug60%Thu 6 Aug5%Fri 7 Aug5%Sat 8 Aug15%Sun 9 Aug25%Mon 10 Aug5%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Onllwyn rainfall forecast issued today at 1:08 am. Next forecast at approx. 3:08 pm. Rainfall Rainfall AccumulationCrug-y-Gorllwyn (Carmarthenshire) RadarGet WillyWeather+ to remove ads