Samoan Prime Minister Tuilaepa Sailele is encouraging the Australian government to increase cuts to carbon emissions to help safeguard low-lying Pacific Island nations against climate change.

Mr Sailele said politicians must step up to tell their countries disaster is a certainty, and the impacts are already being felt by island communities.

The Samoan PM made claims in his speech at Lowy Institute in Sydney in response to Prime Minister Scott Morrison’s plan to abandon Australia’s commitment to cutting carbon emissions under the Paris agreement 2015.