We already know that most of Australia has an arid climate. But what does that mean? What are the exact numbers?
Luckily, the Australian Bureau of Meteorology provides climatological statistics on its website.
I've looked up the mean afternoon (15:00) temperatures and relative humidities in October for the most important points along the route of the World Solar Challenge and I've plotted them on this map. The numbers are rounded.
Just to have an indistinct idea what this must feel like: in the warmest month in Belgium (July), the mean Tmax at Ukkel is 23.0 °C. The lowest mean relative humidity is observed in April and measures 72,5 %!