Southampton Water - River Hamble Entrance Rainfall ForecastUnited KingdomSEHampshireSouthampton Water - River Hamble EntranceToday 19 Dec30%Sat 20 Dec55%Sun 21 Dec70%Mon 22 Dec10%Tue 23 Dec15%Wed 24 Dec15%Southampton Water - River Hamble Entrance rainfall forecast issued today at 6:36 am. Next forecast at approx. 8:36 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