SYDNEY, Aug. 31 (Xinhua) -- Samoan Prime Minister Tuilaepa Sailele, who is on a visit to Australia, has reaffirmed the need for urgent action on climate change, referring to sceptics of the phenomenon as "utterly stupid."

With low lying Pacific nations like Samoa facing a particularly imminent threat from rising water levels, the prime minister urged Australia to take more action in reducing its carbon emissions.

"We all know the problem, we all know the causes, we all know the solutions," Sailele said when addressing a Sydney think tank on Thursday.

"All that is left would be some political courage, some political guts, to get out and tell the people of your country (there is a) certainty of disaster."

Like many countries, Australia has experienced enduring debate regarding emissions reduction policy and climate science in general.

"So any leader of any country who believes that there is no climate change, I think he ought to be taken to mental confinement, he is utterly stupid," Sailele said.