Intense winds hitting velocities of up to 155km/h (96mph) have caused around 90,000 homes without power and forced agencies to call off over 100 aircraft departures, according to domestic outlets.
The gales are impacting the whole southern region and southern parts of the northern region, according to the national weather agency.
Officials in New Zealand have issued rare red wind warnings - the highest alert level - in core zones including these major districts.
Locals have been urged to remain inside, stay off roads, and prepare for further power and communication outages.
Extensive Destruction and Emergency Response
The electricity loss is primarily influencing households mainly in the southern region, although officials state that energy was being slowly brought back.
Local media have indicated that in various locations homes have lost their roofs, whereas trees and electricity poles have been toppled by the winds.
In Wellington, a man was fatally injured after being impacted by a falling limb at a popular trail walking spot on Tuesday.
Meanwhile in Wellington, a female was pushed toward moving cars on a thoroughfare by a strong gust of wind, in a moment that was recorded in a widely shared car camera footage.
Aircraft services entering and leaving the city have been halted as a result of the winds, while certain highways and community centers are also closed.
Simultaneously authorities in Canterbury have announced a crisis declaration, to support disaster response efforts.
Work Stoppages During Extreme Conditions
These intense gusts on this day occur while many of teachers, doctors and other public workers are participating in what has been described as a "major walkout", demanding improved salaries and workplace environments.
But the extreme weather has compelled them to change some of their plans, with some outdoor rallies relocated inside or called off.
Comparable winds are affecting the nearby nation, ushering in a heatwave to the country's outback.
Authorities have announced flame prohibitions for apprehension regarding bushfires.
