September was the hottest spring opener on record in Australia, with the national average temperature a sizzling 2.75C above usual.
The gap between the normal September temperature and that recorded by the Bureau of Meteorology was the biggest for any month on record.
Australians have already endured the hottest January, hottest summer and hottest single day ever.
In its second report, the new Climate Council warns Australia is breaking all the wrong records when it comes to weather.
The council's Professor Will Steffen said Australia was on track to record the warmest year to date.