River Arun Entrance Rainfall ForecastUnited KingdomSEWest SussexRiver Arun EntranceToday 11 May95%Tue 12 May15%Wed 13 May50%Thu 14 May40%Fri 15 May15%Sat 16 May10%Sun 17 May15%River Arun Entrance rainfall forecast issued today at 7:36 pm. Next forecast at approx. 9:36 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