Portlandoo Harbour Rainfall ForecastUnited KingdomNIColerainePortlandoo HarbourToday 18 Oct90%Sun 19 Oct90%Mon 20 Oct40%Tue 21 Oct50%Wed 22 Oct75%Thu 23 Oct75%Fri 24 Oct55%Portlandoo Harbour rainfall forecast issued today at 7:36 am. Next forecast at approx. 9:36 pm.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