The variability is immense. Australia’s wettest year on record was 1974, with a national average of 750.51 mm , while the driest was 1902 at just 319.59 mm .
To understand the "average," one must look at the breakdown of the data: australia's average rainfall
Australia’s average rainfall of ~470 mm conceals one of the world’s most extreme hydrological landscapes. From the monsoonal tropics to the Mediterranean south and the arid red center, the continent forces its inhabitants — human, animal, and vegetable — to adapt to cycles. Understanding regional averages, seasonal drivers, and long-term trends is not an academic exercise: it is essential for farming, water management, bushfire preparedness, and flood resilience in a country where the “average” is often just a pause between droughts and deluges. The variability is immense