Sully Island Rainfall ForecastUnited KingdomWLVale of GlamorganSully IslandToday 19 Jul85%Sun 20 Jul70%Mon 21 Jul40%Tue 22 Jul35%Wed 23 Jul45%Thu 24 Jul10%Sully Island rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Cobbacombe Cross (Devon) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads