Australia's "confronting" climate future will be explored in parliament as a bombshell report lays bare the risks ahead.

The National Climate Risk Assessment , which canvasses a concerning uptick in expected heat-related deaths and ballooning risks for coastal towns as sea levels rise, is to be scrutinised.

At a crunch moment for climate policy, the report authors will be grilled about Australia's vulnerabilities to weather hazards and the government's plan to manage them.

Anthony Albanese's government is considering its 2035 emissions target, which is due to be released later in September.

The prime minister described the risk assessment as a wake-up call for anyone who denied climate change existed.

The cost of disaster recovery payments could rise by $40 billion a year as climate

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