The air mass over Australia's great Victoria desert in January is warm, dry.
The air mass impacts north-central Australia during the most of the year, and with a strong northerly air flow in summer, it may spread scorching conditions to southern Australia. The source of this warm, dry air mass lies above south-central Australia. It rules southern Australia's interior, especially during the winter.
Winters are warm and summers are chilly since the average temperature varies from 8.5 °C (47.5 °F) in July to 17.5 °C (63.5 °F) in January and February.
Except for the far north, where it is tropical (with a wet and a dry season), and on the southern shores, where it is more temperate, oceanic, or Mediterranean, Australia, which is traversed by the Tropic of Capricorn, has a climate that is generally arid and categorised as desert or semi-desert.
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