Powerful gusts reaching velocities of up to 155km/h (96mph) have left nearly 90,000 properties lacking electricity and compelled agencies to call off more than 100 air travel services, as reported by regional news sources.
The gales are affecting the whole southern region and lower areas of the North Island, as stated by the national weather agency.
The nation's agencies have issued infrequent high-level wind alerts - the highest alert level - in core zones encompassing Wellington and Canterbury.
People have been advised to stay indoors, avoid travel, and get ready for additional utility disruptions.
Extensive Destruction and Emergency Response
The power cut is primarily influencing homes mainly in the South Island, although officials report that the electricity supply was being gradually reinstated.
Local media have stated that in certain areas structures have suffered roof damage, whereas trees and electricity poles have been knocked down by the gales.
Across Wellington, a man was killed after being impacted by a falling limb at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a female was swept into moving cars on a road by a powerful blast, in a moment that was filmed in a widely shared car camera footage.
Flights to and from the metropolis have been suspended because of the winds, and some roads and libraries are not operating.
At the same time Canterbury officials have declared a state of emergency, to assist disaster response efforts.
Work Stoppages Alongside Harsh Conditions
These intense gusts on this day occur while tens of thousands of teachers, doctors and other public workers take part in what has been termed a "significant labor action", calling for better pay and working conditions.
However the intense climate has pressured them to alter certain arrangements, with several external protests shifted to interior venues or called off.
Like conditions are impacting the neighboring country, causing a period of extreme heat to the nation's interior regions.
Agencies have declared fire bans for apprehension regarding forest fires.