Here’s the breakdown:

In Australia, autumn lasts for :

This differs from the "Astronomical" definition used in some other parts of the world, which bases the seasons on the equinoxes and solstices. In Australia, the calendar method (starting on the 1st of the month) is the standard used by the Bureau of Meteorology and the general public.

Darwin stays tropical with the "Dry Season" starting. The Outback: Temperatures become much safer for trekking.

In Australia, autumn officially spans three months: .