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 10:34 am. Next forecast at approx. 10:34 pm. Wind Speed Wind Gust South Island Wind Statistics View MoreAugust WindOnslow Airport (31km)2026JulyAugustStrongest 8 August, 202653.6km/h SSWAverage August15.9km/hStrongest 23 July, 202650km/h EAverage July15.3km/hStrongest 27 March, 2026150.1km/h NEAverage 202619.2km/hClimate (2021–2026)Onslow Airport (31km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 27 March, 2026150.1km/h NEAverage 2021–202619.8km/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