Intense gusts attaining velocities of up to 155km/h (96mph) have caused around 90,000 properties without power and led agencies to cancel in excess of 100 air travel services, based on local media.
The winds are influencing the complete southern region and southern sections of the North Island, according to the weather forecasting body.
The nation's agencies have announced infrequent high-level wind alerts - the highest alert level - in key areas including these major districts.
People have been urged to avoid going outside, refrain from journeys, and get ready for additional utility disruptions.
Extensive Damage and Emergency Response
The electricity loss appears to be affecting residences mainly in the South Island, although officials state that energy was being slowly brought back.
Regional news have reported that in certain areas structures have suffered roof damage, while power lines and trees have been knocked down by the gusts.
In Wellington, a man was killed after being struck by a tree branch at a well-known hiking path on Tuesday.
Additionally in the city, a individual was pushed toward moving cars on a thoroughfare by a intensive burst, in a event that was captured in a widely shared car camera footage.
Air travel to and from the city have been cancelled as a result of the weather, whereas various routes and public facilities are shut down.
At the same time authorities in Canterbury have declared a emergency situation, to facilitate emergency management operations.
Labor Protests Alongside Harsh Weather
The wild winds on this day occur while many of teachers, doctors and other public workers are engaged in what has been described as a "significant labor action", demanding higher wages and enhanced employment terms.
However the extreme weather has compelled them to modify certain arrangements, with several external protests moved indoors or cancelled.
Comparable winds are affecting the nearby nation, bringing a period of extreme heat to the country's outback.
Officials have announced burning restrictions for fear of forest fires.
