Intense gusts hitting speeds of up to 155km/h (96mph) have left around 90,000 properties experiencing outages and forced agencies to call off over 100 air travel services, according to local media.
These gusts are influencing the complete South Island and southern sections of the northern region, per the national weather agency.
The nation's agencies have issued uncommon high-level wind alerts - the most severe warning - in core zones including these major districts.
Locals have been encouraged to remain inside, refrain from journeys, and make arrangements for more power and communication outages.
Extensive Damage and Crisis Measures
This outage is primarily influencing homes mostly in the South Island, while agencies report that power was being slowly brought back.
Local media have reported that in various locations structures have suffered roof damage, and trees and electricity poles have been toppled by the gales.
Across Wellington, a man was lost his life after being impacted by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a woman was pushed toward oncoming traffic on a thoroughfare by a strong gust of wind, in a incident that was recorded in a viral dashcam video.
Air travel to and from the metropolis have been suspended due to the winds, while various routes and public facilities are shut down.
Meanwhile Canterbury officials have issued a crisis declaration, to support recovery activities.
Work Stoppages Amid Harsh Weather
The powerful gales on this day come as many of educators, medical professionals and government employees are participating in what has been termed a "major walkout", requesting higher wages and enhanced employment terms.
However the severe conditions has compelled them to modify certain arrangements, with several external protests relocated inside or cancelled.
Comparable winds are also sweeping Australia, bringing a period of extreme heat to the country's outback.
Agencies have issued fire bans for concern about wildfires.