Southampton Water - River Hamble Entrance Rainfall ForecastUnited KingdomSEHampshireSouthampton Water - River Hamble EntranceToday 13 May75%Thu 14 May80%Fri 15 May35%Sat 16 May50%Sun 17 May40%Mon 18 May40%Tue 19 May40%Southampton Water - River Hamble Entrance rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 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