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 today at 7:42 am. Next forecast at approx. 7:42 am.Get WillyWeather+ to remove ads