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 1:33 am. Next forecast at approx. 1:33 pm. Wind Speed Wind Gust South Island Wind Statistics View MoreSeptember WindOnslow Airport (31km)2026AugustSeptemberStrongest 5 September, 202657.2km/h WSWAverage September19.9km/hStrongest 8 August, 202653.6km/h SSWAverage August16km/hStrongest 27 March, 2026150.1km/h NEAverage 202619km/hClimate (2021–2026)Onslow Airport (31km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 27 March, 2026150.1km/h NEAverage 2021–202619.7km/hWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average September12.5%7.5%2.5%LightCalmSeptember Wind RoseSeptember (5 Year Average)5 Year Average Annual5 Year Average September17.5%10%2.5%LightCalmGet WillyWeather+ to remove ads