Twynllanan Rainfall ForecastUnited KingdomWLCarmarthenshireTwynllananToday 8 May45%Sat 9 May10%Sun 10 May5%Mon 11 May35%Tue 12 May40%Wed 13 May55%Thu 14 May60%Twynllanan rainfall forecast issued today at 7:38 pm. Next forecast at approx. 9:38 am.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