Trelech a'r Betws Rainfall ForecastUnited KingdomWLCarmarthenshireTrelech a'r BetwsToday 2 Jan85%Sat 3 Jan85%Sun 4 Jan60%Mon 5 Jan45%Tue 6 Jan80%Wed 7 Jan40%Thu 8 Jan35%Trelech a'r Betws rainfall forecast issued today at 6:36 am. Next forecast at approx. 8:36 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