Southsea Castle Rainfall ForecastUnited KingdomSEHampshireSouthsea CastleToday 10 Feb80%Wed 11 Feb90%Thu 12 Feb50%Fri 13 Feb25%Sat 14 Feb25%Sun 15 Feb75%Mon 16 Feb35%Southsea Castle rainfall forecast issued today at 6:35 am. Next forecast at approx. 8:35 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