Cape Portland Wind ForecastAustraliaTASNorthernCape Portland1-Day3-Day5-Day Graph Plots Open in GraphsWind Forecast Bureau of MeteorologySwell Height and Direction Forecast NOAA WaveWatch IIIWind Real-Time Cape Portland wind forecast issued today at 5:11 am. Next forecast at approx. 5:23 am. Cape Portland Wind Statistics View MoreJune WindSWAN ISLAND (12km)2019MayJuneStrongest 10 June, 201979.6km/h NWAverage June19.7km/hStrongest 26 May, 201992.5km/h NWAverage May23.3km/hStrongest 25 March, 2019100.1km/h WNWAverage 201923.1km/hClimate (2010–Present)SWAN ISLAND (12km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 12 August, 2017120.2km/h NWAverage 2010–Present23.1km/hWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average June25%13.75%2.5%CalmGaleJune Wind RoseJune (5 Year Average)5 Year Average Annual5 Year Average June30%16.25%2.5%CalmGaleGet an account to remove ads