Storm: The outlook for Saturday

The hangover from the wild weather that's been pounding the North Island and parts of the South is set to wrap up.

Heavy rainfall and storm surges have battered many low-lying areas, forcing some people to self-evacuate.

But MetService meterologist Ciaran Doolin says the normal summer conditions will be back for some from Saturday.

"There's a weak frontal feature affecting Otago, Fiordland, Southland, and there's a few showers affecting some areas in the North Island too, but there will be large areas of fine weather."

Mr Doolin says the low pressure system should ease by late afternoon.

"We have quite strong southwesterly winds along the east coast in particular of the South Island and the North Island. In places like Wellington, there's a severe weather warning for strong winds in place."

Late on Friday evening, MetService issued a severe weather watch for central New Zealand. The heaviest rain is expected about Tongariro National Park and the Kaikoura ranges and coast.

Severe gales are expected for the lower North Island and Marlborough through to Saturday afternoon.

Strong southwesterlies may become severe in exposed places of Canterbury from Banks Peninsula northwards, Taihape, Whanganui and Manawatu, also Hawke's Bay south of Napier.

An update is expected around 10am.