Southampton Rainfall ForecastUnited KingdomSEHampshireSouthamptonToday 3 Sep75%Fri 4 Sep50%Sat 5 SepNo RainSun 6 Sep10%Mon 7 Sep15%Tue 8 Sep15%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Southampton rainfall forecast issued today at 1:08 am. Next forecast at approx. 3:08 pm. Rainfall Rainfall AccumulationDean Hill (Wiltshire) RadarGet WillyWeather+ to remove ads