Portlandoo Harbour Rainfall ForecastUnited KingdomNIColerainePortlandoo HarbourToday 3 May20%Mon 4 May15%Tue 5 May15%Wed 6 May20%Thu 7 May30%Fri 8 May30%Portlandoo Harbour 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 Castor Bay (Lurgan) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads