Tregatta Rainfall ForecastUnited KingdomSWCornwallTregattaToday 12 Jun25%Sat 13 Jun5%Sun 14 Jun5%Mon 15 Jun15%Tue 16 Jun50%Wed 17 Jun50%Thu 18 Jun50%Tregatta rainfall forecast issued today at 7:37 pm. Next forecast at approx. 9:37 am.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