Round Island Rainfall ForecastUnited KingdomSWDorsetRound IslandToday 19 Jul80%Sun 20 Jul70%Mon 21 Jul40%Tue 22 Jul15%Wed 23 Jul5%Thu 24 Jul5%Fri 25 Jul5%Round Island rainfall forecast issued today at 1:37 pm. Next forecast at approx. 3:37 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads