Portsmouth Harbour - Royal Clarence Marina Rainfall ForecastUnited KingdomSEHampshirePortsmouth Harbour - Royal Clarence MarinaToday 28 Oct15%Thu 29 Oct5%Fri 30 OctNo RainSat 31 Oct15%Sun 1 Nov10%Mon 2 Nov5%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Portsmouth Harbour - Royal Clarence Marina rainfall forecast issued today at 12:11 am. Next forecast at approx. 2:11 pm. Rainfall Rainfall AccumulationDean Hill (Wiltshire) RadarGet WillyWeather+ to remove ads