Southampton Rainfall ForecastUnited KingdomSEHampshireSouthamptonToday 17 Nov5%Mon 18 NovNo RainTue 19 Nov5%Wed 20 Nov5%Thu 21 Nov45%Southampton rainfall forecast issued today at 11:31 pm. Next forecast at approx. 1:31 pm.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