Sydney and Melbourne could be hit by 50C summer days before the end of the century, if greenhouse gas emissions continue to rise, according to a new report.

The Climate Council report says that 206 heat records have been broken in just 90 days this year and temperatures in New South Wales are 3.41C above average.

“Queensland and New South Wales have both lost more homes (to bushfire) since August 2019 than in any previous year, with the hottest months of the fire season still to come,” the report said.

Unusually high temperatures are now starting 19 days earlier in Sydney and 17 days earlier in Melbourne if you compare the data for 1981-2011 and 1950-1980.

The number of heatwave days each year has also increased in Perth, Adelaide, Melbourne, Sydney, Canberra and Hobart since 1950.

The report goes on to say that Melbourne and Sydney could get 50C summer days soon.

The Bureau of Meteorology is forecasting above-average maximum temperatures for most of Australia this summer with eastern Australia likely to be drier than average.

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