Swannay Rainfall ForecastUnited KingdomOSOrkney IslandsSwannayToday 16 Sep55%Wed 17 Sep85%Thu 18 Sep45%Fri 19 Sep35%Sat 20 Sep30%Sun 21 Sep15%Mon 22 Sep10%Swannay rainfall forecast issued today at 7:38 am. Next forecast at approx. 9:38 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Druim a'Starraig (Isle of Lewis) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads