Why has Australia been hit with so much rain?

At the start of the summer holidays, many Australians were preparing for another bad bushfire season. But instead, communities on the east coast have been battling extreme rainfall – from Cyclone Jasper in far north Queensland and severe storms on the Gold Coast to flooding in southern New South Wales and Victoria. Jane Lee talks with Guardian Australia’s environment reporter Graham Readfearn on what is driving these devastating downpours and whether they become more common in the future