Portsmouth Harbour - Haslar Marina Rainfall ForecastUnited KingdomSEHampshirePortsmouth Harbour - Haslar MarinaToday 2 Jul10%Fri 3 Jul5%Sat 4 JulNo RainSun 5 Jul5%Mon 6 Jul5%Tue 7 JulNo RainPortsmouth Harbour - Haslar Marina rainfall forecast issued today at 1:37 am. Next forecast at approx. 3:37 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Rainfall Rainfall AccumulationDean Hill (Wiltshire) RadarGet WillyWeather+ to remove ads