Weather: Dregs of Debbie bring wet week ahead

Wanaka sunrise
Sunrise in Wanaka on Friday (Hetty Van Hale)

Most of New Zealand is set for a dry Saturday, before the dregs of Australia's tropical cyclone Debbie reach our shores.

While the North Island is expected to get most of the dry weather, a damp northwest flow will bring some heavy rain to Fiordland and the South Island's West Coast, NIWA says.

New Zealanders do get an extra hour's sleep on Saturday night with daylight saving, but a showers on Sunday will hit parts of the North Island, and by Sunday afternoon a southerly wind will bring cold nights across the country.

By Monday and Tuesday the weather could get heavy as tropical moisture from cyclone Debbie will stream in from the Tasman Sea, NIWA says.

"Rainfall amounts during this time could reach 50mm in parts of the western and central North Island.

"Additional heavy rain may track across the North Island on Wednesday and Thursday as well."

In southern Queensland and northern New South Wales, tens of thousands of people have been told to evacuate if they can.

The tail end of cyclone Debbie dumped an unprecedented amount of rain, and authorities fear significant loss of life.

Rescue services can't reach those appealing for help in many towns and cities.

The town of Lismore is causing major concern with severe flooding crashing over its protective levee, and emergency services say residents should leave.

Newshub.