This FACT indicates the average annual afternoon wind speeds, in kilometres per hour, measured at 3pm in each Australian city between the years 1893 to 2010. Note that each city has various lengths of records kept. Wind speed, or wind velocity, is commonly measured with an anemometer. Wind speed measurement is important as it affects weather forecasts, outdoor work operations, maritime operations, construction projects and the growth rate of plants. The city with the highest wind speed average is Brisbane at 18.5 kilometres per hour. The city with the lowest is Canberra at 11.5 kilometres per hour, followed by Melbourne, at 14.2 kilometres per hour.