Penzance Harbour Rainfall ForecastUnited KingdomSWCornwallPenzance HarbourToday 21 May85%Thu 22 MayNo RainFri 23 May45%Sat 24 May60%Sun 25 May35%Mon 26 May30%Penzance Harbour 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 Predannack (Cornwall) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads