Grantham Island Wind ForecastAustraliaSAEyre PeninsulaGrantham Island1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Bureau of MeteorologyWind Real-Time Grantham Island wind forecast issued today at 2:04 pm. Next forecast at approx. 2:04 am. Grantham Island Wind Statistics View MoreSeptember WindPort Lincoln Airport (19km)2025AugustSeptemberStrongest 7 September, 202576km/h NWAverage September17km/hStrongest 4 August, 202583.2km/h NWAverage August17.9km/hStrongest 7 June, 202587.1km/h WSWAverage 202518.7km/hClimate (2010–Present)Port Lincoln Airport (19km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 7 July, 2023101.9km/h NWAverage 2020–202518.5km/hWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average September10%6.25%2.5%CalmNear GaleSeptember Wind RoseSeptember (5 Year Average)5 Year Average Annual5 Year Average September12.5%7.5%2.5%CalmNear GaleGet WillyWeather+ to remove ads