Activists are occupying Jacinda Ardern's office on Friday, angry over the lack of immediate action on the Manus Island refugee crisis.

The Auckland Peace Action protesters are demanding Ms Ardern bring all the Manus Island refugees to New Zealand now.

"Jacinda Ardern needs to talk directly to the Papua New Guinea government to arrange for all the Manus Island refugees to be brought to New Zealand," says Auckland Peace Action member Hamish Noonan.

"This week Papua New Guinea government officials have been destroying the water supplies, and the refugees are reaching their 17th day without water, power, food and essential medication."