Porth Tyn Tywyn Rainfall ForecastUnited KingdomWLIsle of AngleseyPorth Tyn TywynToday 28 Apr50%Mon 29 Apr85%Tue 30 Apr50%Wed 1 May15%Thu 2 May10%Fri 3 May5%Porth Tyn Tywyn rainfall forecast issued yesterday at 7:37 pm. Next forecast at approx. 9:37 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dublin RadarNational SatelliteNational SynopticGet an account to remove ads