Powerful gales hitting velocities of as high as 155km/h (96mph) have caused nearly 90,000 homes experiencing outages and led agencies to cancel over 100 flights, based on domestic outlets.
The winds are affecting the whole southern region and southern sections of the northern region, according to the national weather agency.
Officials in New Zealand have announced infrequent severe gust advisories - the most severe warning - in key areas including Canterbury and Wellington.
People have been urged to remain inside, refrain from journeys, and prepare for more power and communication outages.
Extensive Damage and Crisis Measures
The power cut seems to be impacting homes mostly in the South Island, although agencies say that the electricity supply was being slowly brought back.
Local media have indicated that in various locations homes have lost their roofs, whereas utility poles and vegetation have been toppled by the gusts.
Within the capital, a individual was killed after being hit by a wooden fragment at a popular trail walking spot on earlier this week.
Meanwhile in Wellington, a female was blown onto oncoming traffic on a street by a intensive burst, in a moment that was recorded in a viral dashcam video.
Air travel in and out of the city have been cancelled as a result of the weather, whereas certain highways and community centers are also closed.
Meanwhile local leaders have announced a crisis declaration, to support recovery activities.
Labor Protests During Harsh Weather
These intense gusts on today come as many of school staff, physicians and civil servants are participating in what has been called a "mega strike", calling for higher wages and enhanced employment terms.
But the intense climate has forced them to modify certain arrangements, with several external protests moved indoors or abandoned.
Like conditions are impacting the nearby nation, ushering in a high-temperature event to the country's outback.
Agencies have issued burning restrictions for apprehension regarding bushfires.