Grassy Island Wind ForecastAustraliaTASNorth WesternGrassy Island1-Day3-Day5-Day Graph Plots Open in Graphs Wind Forecast Bureau of Meteorology Swell Height and Direction Forecast NOAA WaveWatch IIIWind Real-Time Grassy Island wind forecast issued today at 12:35 am. Next forecast at approx. 12:35 pm. Grassy Island Wind Statistics View MoreDecember WindKing Island Airport (26km)2025NovemberDecemberStrongest 1 December, 202555.4km/h SWAverage December23.6km/hStrongest 24 November, 202581.4km/h ENEAverage November26.2km/hStrongest 24 May, 2025109.1km/h NWAverage 202522.7km/hClimate (2010–Present)King Island Airport (26km)Take a look at our website widgetsAvailable free! Find Out MoreStrongest 1 September, 2024157.3km/h WNWAverage 2020–202522.9km/hWind RoseAnnual (5 Year Average)5 Year Average Annual5 Year Average December15%8.75%2.5%CalmNear GaleDecember Wind RoseDecember (5 Year Average)5 Year Average Annual5 Year Average December17.5%10%2.5%CalmNear GaleGet WillyWeather+ to remove ads