Minute's silence for NZ volcano dead

New Zealand prime minister Jacinda Ardern has invited Kiwis and Australians to share in a minute's silence for victims of the deadly volcanic blast on White Island.

The memorial will take place on 2:11pm NZDT and 12:11pm AEDT on Monday, precisely a week since the eruption began.

"Wherever you are in New Zealand, or around the world, this is a moment we can stand alongside those who have lost loved ones in this extraordinary tragedy," Ardern said.

"Together we can express our sorrow for those who have died and been hurt, and our support for their grieving families and friends."

Ardern will mark the occasion alongside cabinet members at their weekly meeting of government executives.

The official death toll from the Whakaari tragedy stands at eight.