Portsmouth Harbour - Burrow Island Rainfall ForecastUnited KingdomSEHampshirePortsmouth Harbour - Burrow IslandToday 8 May80%Sat 9 May20%Sun 10 May15%Mon 11 May10%Tue 12 May10%Wed 13 May35%Portsmouth Harbour - Burrow Island rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads