Portsmouth Harbour - Fareham Marina Rainfall ForecastUnited KingdomSEHampshirePortsmouth Harbour - Fareham MarinaToday 8 Sep35%Tue 9 Sep40%Wed 10 Sep45%Thu 11 Sep45%Fri 12 Sep45%Sat 13 Sep50%Portsmouth Harbour - Fareham Marina rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 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