Southsea Castle Rainfall ForecastUnited KingdomSEHampshireSouthsea CastleToday 23 Apr10%Wed 24 Apr5%Thu 25 Apr10%Fri 26 Apr45%Sat 27 Apr55%Sun 28 Apr40%Mon 29 Apr10%Southsea Castle rainfall forecast issued today at 1:38 pm. Next forecast at approx. 3:38 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet an account to remove ads