The Western Australian climate is the most diverse in the
country, due to its large size, and it is divided into three main
climatic zones: tropical, semi-arid and Mediterranean. The north is
tropical, characterised by a sunny dry season (April to September)
and a wet season (October to March) with its humidity, heavy rains
and thunderstorms. The dry season has ideal temperatures, with hot
days and mild evenings, and is perhaps the best time to travel to
Western Australia. The central part of the state falls within the
semi-arid zone and consists mostly of desert regions. A temperate,
Mediterranean climate characterises the south where the summers are
warm and dry and the winters mild and wet. Perth lies within this
zone and the hot summer days are cooled by the strong afternoon sea
breeze. Perth has a very low rate of humidity. Winters (June to
August) are mild, with the wettest month being July.