Portsmouth Harbour - Royal Clarence Marina Rainfall ForecastUnited KingdomSEHampshirePortsmouth Harbour - Royal Clarence MarinaToday 31 Jan50%Sat 1 Feb20%Sun 2 Feb5%Mon 3 Feb5%Tue 4 Feb45%Wed 5 FebNo RainPortsmouth Harbour - Royal Clarence Marina rainfall forecast issued today at 12:38 am. Next forecast at approx. 2:38 pm.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