South Island Wind ForecastAustraliaWAPilbaraSouth Island1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Bureau of MeteorologyWind Real-Time South Island wind forecast issued today at 8:11 am. Next forecast at approx. 8:11 pm. South Island Wind Statistics View MoreAugust WindOnslow Airport (31km)2025JulyAugustStrongest 26 August, 202561.2km/h SSEAverage August17.1km/hStrongest 24 July, 202568.4km/h SWAverage July17.9km/hStrongest 20 January, 2025100.1km/h NEAverage 202518.3km/hClimate (2010–Present)Onslow Airport (31km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 20 January, 2025100.1km/h NEAverage 2020–202519.7km/hWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average August12.5%7.5%2.5%CalmNear GaleAugust Wind RoseAugust (5 Year Average)5 Year Average Annual5 Year Average August20%11.25%2.5%CalmNear GaleGet WillyWeather+ to remove ads