Intense gusts reaching speeds of as high as 155km/h (96mph) have resulted in nearly 90,000 households lacking electricity and led officials to cancel more than 100 air travel services, according to domestic outlets.
The gales are impacting the entire southern region and southern parts of the North Island, as stated by the national weather agency.
Officials in New Zealand have issued uncommon high-level wind alerts - the top caution category - in core zones including these major districts.
People have been encouraged to remain inside, refrain from journeys, and prepare for further power and communication outages.
Extensive Impact and Crisis Response
This outage is primarily influencing homes mostly in the South Island, although authorities report that energy was being slowly brought back.
Regional news have stated that in some places roofs have been ripped off houses, and power lines and trees have been knocked down by the winds.
Across Wellington, a man was killed after being hit by a wooden fragment at a popular trail walking spot on Tuesday.
Also in the capital, a individual was pushed toward moving cars on a street by a powerful blast, in a moment that was recorded in a viral dashcam video.
Aircraft services to and from the metropolis have been halted because of the weather, and various routes and public facilities are shut down.
Simultaneously Canterbury officials have issued a crisis declaration, to support recovery activities.
Labor Protests Alongside Extreme Weather
The wild winds on today coincide with tens of thousands of educators, medical professionals and government employees take part in what has been described as a "significant labor action", requesting improved salaries and workplace environments.
But the severe conditions has pressured them to alter various scheduled activities, with several external protests moved indoors or called off.
Like conditions are affecting Australia, bringing a period of extreme heat to the country's outback.
Officials have announced fire bans for concern about forest fires.