Portlandoo Harbour Rainfall ForecastUnited KingdomNIColerainePortlandoo HarbourToday 2 Dec20%Wed 3 Dec75%Thu 4 Dec10%Fri 5 Dec80%Sat 6 Dec30%Sun 7 Dec55%Mon 8 Dec55%Portlandoo Harbour rainfall forecast issued today at 6:35 pm. Next forecast at approx. 8:35 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