Birsay Rainfall ForecastUnited KingdomOSOrkney IslandsBirsayToday 17 Dec60%Thu 18 Dec85%Fri 19 Dec80%Sat 20 Dec5%Sun 21 Dec55%Mon 22 Dec55%Tue 23 Dec15%Birsay rainfall forecast issued today at 6:37 pm. Next forecast at approx. 8:37 am.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