Southampton Rainfall ForecastUnited KingdomSEHampshireSouthamptonToday 19 SepNo RainFri 20 SepNo RainSat 21 Sep10%Sun 22 Sep65%Mon 23 Sep60%Southampton rainfall forecast issued today at 7:31 pm. Next forecast at approx. 9:31 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time National RadarNational SatelliteNational SynopticGet an account to remove ads