Southwick Rainfall ForecastUnited KingdomSEHampshireSouthwickToday 12 May10%Wed 13 May65%Thu 14 May65%Fri 15 May45%Sat 16 May20%Sun 17 May45%Mon 18 May10%Southwick rainfall forecast issued today at 7:37 pm. Next forecast at approx. 9:37 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 WillyWeather+ to remove ads