Portsmouth Harbour - Inner Rainfall ForecastUnited KingdomSEHampshirePortsmouth Harbour - InnerToday 12 NovNo RainFri 13 Nov5%Sat 14 Nov15%Sun 15 Nov65%Mon 16 Nov50%Tue 17 Nov75%Wed 18 Nov30%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Portsmouth Harbour - Inner rainfall forecast issued today at 12:08 pm. Next forecast at approx. 2:08 am. Rainfall Rainfall AccumulationDean Hill (Wiltshire) RadarGet WillyWeather+ to remove ads