Portland Harbour Swell ForecastAustraliaVICWestern DistrictPortland Harbour1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIPortland Harbour swell forecast issued yesterday at 7:34 pm. Next forecast at approx. 7:34 pm.Get WillyWeather+ to remove ads