Postans Wind ForecastAustraliaWAPerthPostans1-Day3-Day5-Day Graph Plots Open in GraphsWind Forecast Bureau of MeteorologyWind Real-Time Postans wind forecast issued today at 9:11 am. Next forecast at approx. 9:23 am. Postans Wind Statistics View MoreJune WindGARDEN ISLAND HSF (11km)2019MayJuneStrongest 10 June, 201994.3km/h WAverage June20.7km/hStrongest 16 May, 201972.4km/h SAverage May16.7km/hStrongest 10 June, 201994.3km/h WAverage 201921.6km/hClimate (2010–Present)GARDEN ISLAND HSF (11km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 25 February, 2018129.6km/h WSWAverage 2010–Present22km/hWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average June17.5%10%2.5%CalmNear GaleJune Wind RoseJune (5 Year Average)5 Year Average Annual5 Year Average June15%8.75%2.5%CalmNear GaleGet an account to remove ads