Southwick Rainfall ForecastUnited KingdomSEHampshireSouthwickToday 14 Sep90%Mon 15 Sep40%Tue 16 Sep75%Wed 17 Sep70%Thu 18 Sep25%Fri 19 Sep30%Southwick rainfall forecast issued today at 7:36 am. Next forecast at approx. 9:36 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