Christchurch Harbour Rainfall ForecastUnited KingdomSWDorsetChristchurch HarbourToday 31 Aug55%Mon 1 Sep60%Tue 2 Sep70%Wed 3 Sep50%Thu 4 Sep40%Fri 5 Sep10%Christchurch Harbour rainfall forecast issued today at 7:35 am. Next forecast at approx. 9:35 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