Sully Island Rainfall ForecastUnited KingdomWLVale of GlamorganSully IslandToday 18 Jan85%Mon 19 Jan85%Tue 20 Jan20%Wed 21 Jan45%Thu 22 Jan65%Fri 23 Jan35%Sully Island rainfall forecast issued today at 12:36 am. Next forecast at approx. 2:36 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