Australia is well renowned for its endless blue skies and bright sunshine. Visitors should however be aware that the seasons are reverse of those in the Northern Hemisphere and that Australia can broadly be divided into two climatic zones.
The tropical north (Far North Queensland, the Top End and the Kimberley) has two distinct seasons. The 'green' season runs from November to April with the heaviest rainfalls usually in January-March. Temperatures range 24-33°C (75-91 Fahrenheit) and may be accompanied by high humidity. It is a spectacular time to see the region's rainforests and waterfalls. The 'dry' season (May to October) is characterised by clear blue skies and warm sunshine, averaging between 16-26°C (61-79 Fahrenheit) and is perhaps the most comfortable time to enjoy the tropics.
Australia's southern states largely enjoy a temperate, Mediterranean style, climate. Warm summers and cool winters can usually be enjoyed without extremes. The further south you travel, the more distinct the four seasons become, with the country's most southern reaches and highlands experiencing frosts and winter snow falls.
Summers by the beach in Sydney, clear blue skies over Kakadu in the Australian winter months, spring wildflowers in Western Australia or the autumn colours around Canberra - Australia's geographical and climatic diversity make any time a good time to visit. December through to February is the ideal time to join in the Australians' celebration of summer. It is also a popular holiday season with the locals, particularly for travel along the east coast. However spring (September to November) and autumn (March to May) are perhaps the best times to visit when combining travel to both the northern and southern parts of the country.
The bureau of meteorology www.bom.gov.au provides information on current weather conditions and general climate information specific to each part of the country. Our Australian Climate Guide also provides further useful information about the weather you can expect around the country, throughout the year http://southern-crossings.com/pdf/AustClimateGuide.pdf