Birsay Rainfall ForecastUnited KingdomOSOrkney IslandsBirsayToday 18 Mar5%Thu 19 Mar15%Fri 20 Mar20%Sat 21 Mar20%Sun 22 Mar50%Mon 23 Mar60%Tue 24 Mar35%Birsay rainfall forecast issued today at 12:36 pm. Next forecast at approx. 2:36 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