Han You should acknowledge this as true. http://en.wikipedia.org/wiki/Perth
Perth receives moderate though highly seasonal rainfall, making it the fourth wettest Australian capital city after Darwin, Sydney and Brisbane. Summers are generally hot and dry, lasting from December to late March, with February generally being the hottest month of the year, while winters are relatively cool and wet, making Perth a classic example of a MEDITTEREAN CLIMATE (Köppen climate classification Csa).[39][40] Summer is not completely devoid of rain with sporadic rainfall in the form of short-lived thunderstorms, weak cold fronts and on very rare occasions decaying tropical cyclones from Western Australia's north-west which can bring significant falls. The highest ever recorded temperature in Perth was 46.2 °C (115.2 °F) on 23 February 1991, although Perth Airport recorded 46.7 °C (116.1 °F) on the same day.
