Large parts of Australia lie in solar-climatic areas of the tropics and subtropics. The boundary between them passes near the southern tropic. Here, the dominant influence of the high-pressure belt of the southern hemisphere characterises the climate of large parts of the continent. The combination of windward-leeward effects and high altitude creates such a wide range of climatic conditions between dry and frequently humid tropics and between a dry and moist subtropic summer and winter. In the area of Tasmania, Australia extends to the south right up into the southern mid latitude, as does New Zealand. With a few exceptions, the Pacific islands lie in the tropics.
Map:Temperatures in July During the austral winters in July, average temperatures in parts of south west Australia fall below 5 °C. The continental influence of the Australian interior is carried less into this season. Temperature conditions in Tasmania and New Zealand are comparable to those in Europe, as seen by the "inversion seasons", in the southern hemisphere. A. Siegmund; Ü: Colette Fleming