Sunny autumn days can be expected over the next few days, while southeasterlies will cause temperatures to dip below 10 degrees Celsius at night.

A ridge of high pressure is expected to move onto the North Island on Tuesday, with a northwest flow developing over the South Island, MetService said.

On Wednesday, a strong moist northwesterly flow will affect the south of the South Island.

"There is low confidence that severe northwesterly gales will affect Southland and Fiordland and low confidence that warning amounts of rain will accumulate in Fiordland," a spokesperson said.

The strong northwesterly flow is set to continue affecting the South Island and central New Zealand on Thursday.

"There is low confidence that severe northwesterly gales will affect Wellington. There is moderate confidence that warning amounts of rain will accumulate in Fiordland and the Westland District."

On Friday, a low from the subtropics is likely to move south onto the North Island accompanied by a moist northeasterly flow. Rain is forecast for the Bay of Plenty on Friday.

Again MetService said there is low confidence that warning amounts of rain will accumulate over the upper North Island.