Birsay Rainfall ForecastUnited KingdomOSOrkney IslandsBirsayToday 18 Oct20%Sun 19 Oct60%Mon 20 Oct45%Tue 21 Oct15%Wed 22 Oct20%Thu 23 Oct50%Birsay rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 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