Portsmouth Harbour - Haslar Marina Rainfall ForecastUnited KingdomSEHampshirePortsmouth Harbour - Haslar MarinaToday 15 Nov15%Mon 16 Nov95%Tue 17 Nov45%Wed 18 Nov65%Thu 19 Nov65%Fri 20 Nov35%Sat 21 Nov55%1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Portsmouth Harbour - Haslar Marina rainfall forecast issued today at 6:08 pm. Next forecast at approx. 8:08 am. Rainfall Rainfall AccumulationDean Hill (Wiltshire) RadarGet WillyWeather+ to remove ads