Australia has been urged not to cower in its fight for hosting rights of a major climate summit as the prime minister prepares to make his case for a rival bidder to stand down.

Canberra has teamed up with the Pacific countries in a proposal to jointly hold the 2026 United Nations Climate Change Conference, known as COP31.

Turkey has also expressed an interest in hosting the summit and neither bidder has so far backed away from the chance to hold the talks on home soil.

Prime Minister Anthony Albanese is preparing to meet with Turkish President Recep Tayyip Erdogan on the sidelines of the UN general assembly in New York to try to convince the leader to withdraw Ankara's bid.

Mr Albanese said he would advocate for Australia's case in good faith, and he had already held discussions with

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