Portsmouth Harbour - Haslar Marina Rainfall ForecastUnited KingdomSEHampshirePortsmouth Harbour - Haslar MarinaToday 28 Mar95%Fri 29 Mar60%Sat 30 Mar5%Sun 31 Mar15%Mon 1 Apr20%Tue 2 Apr35%Wed 3 Apr50%Portsmouth Harbour - Haslar Marina rainfall forecast issued today at 12:33 pm. Next forecast at approx. 2:33 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet an account to remove ads