Powerful gusts attaining speeds of as high as 155km/h (96mph) have left nearly 90,000 households without power and forced agencies to call off over 100 air travel services, according to regional news sources.
The winds are affecting the entire southern region and lower areas of the North Island, according to the national weather agency.
Officials in New Zealand have released rare high-level wind alerts - the top caution category - in central regions such as these major districts.
Residents have been advised to stay indoors, stay off roads, and get ready for further utility disruptions.
Widespread Destruction and Emergency Measures
The power cut is primarily influencing households mainly in the South Island, though agencies state that power was being restored progressively.
Regional news have indicated that in certain areas homes have lost their roofs, while trees and electricity poles have been toppled by the gales.
Across Wellington, a individual was killed after being hit by a tree branch at a popular trail walking spot on earlier this week.
Additionally in the city, a individual was swept into moving cars on a thoroughfare by a strong gust of wind, in a incident that was recorded in a viral dashcam video.
Flights to and from the urban area have been suspended as a result of the weather, while certain highways and community centers are shut down.
Meanwhile local leaders have announced a state of emergency, to assist emergency management operations.
Strike Action During Severe Weather
The wild winds on this day come as numerous of school staff, physicians and civil servants take part in what has been termed a "mega strike", demanding higher wages and enhanced employment terms.
However the severe conditions has forced them to alter certain arrangements, with various open-air gatherings relocated inside or abandoned.
Like conditions are affecting the nearby nation, bringing a period of extreme heat to the nation's interior regions.
Authorities have issued fire bans for apprehension regarding wildfires.