Portlandoo Harbour Rainfall ForecastUnited KingdomNIColerainePortlandoo HarbourToday 17 Mar65%Wed 18 Mar45%Thu 19 Mar5%Fri 20 Mar5%Sat 21 Mar10%Sun 22 Mar50%Mon 23 Mar55%Portlandoo Harbour rainfall forecast issued today at 6:36 pm. Next forecast at approx. 8:36 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Castor Bay (Lurgan) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads