Southampton Water - River Hamble Entrance Rainfall ForecastUnited KingdomSEHampshireSouthampton Water - River Hamble EntranceToday 15 Nov35%Mon 16 Nov95%Tue 17 Nov45%Wed 18 Nov50%Thu 19 Nov60%Fri 20 Nov45%Sat 21 Nov55%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Southampton Water - River Hamble Entrance rainfall forecast issued today at 6:08 pm. Next forecast at approx. 8:08 am. Rainfall Rainfall AccumulationDean Hill (Wiltshire) RadarGet WillyWeather+ to remove ads