Flat Holm Island Rainfall ForecastUnited KingdomWLVale of GlamorganFlat Holm IslandToday 16 Sep5%Tue 17 SepNo RainWed 18 Sep10%Thu 19 Sep10%Fri 20 Sep35%Sat 21 Sep55%Sun 22 Sep35%Flat Holm Island rainfall forecast issued today at 1:38 pm. Next forecast at approx. 3:38 am.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