Portsea Island Rainfall ForecastUnited KingdomSEHampshirePortsea IslandToday 3 Dec15%Wed 4 Dec85%Thu 5 Dec55%Fri 6 Dec85%Sat 7 Dec50%Sun 8 Dec10%Mon 9 Dec5%Portsea Island rainfall forecast issued today at 12:38 pm. Next forecast at approx. 2:38 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