Severe gusts hitting speeds of approximately 155km/h (96mph) have resulted in nearly 90,000 homes lacking electricity and forced officials to call off over 100 flights, according to domestic outlets.
The gales are affecting the complete South Island and southern parts of the North Island, according to the national weather agency.
Officials in New Zealand have released infrequent red wind warnings - the top caution category - in central regions such as these major districts.
Residents have been urged to remain inside, refrain from journeys, and make arrangements for further electricity and network failures.
Extensive Damage and Crisis Response
The power cut seems to be impacting households predominantly in the South Island, while authorities report that energy was being gradually reinstated.
Domestic outlets have stated that in various locations homes have lost their roofs, while power lines and trees have been toppled by the winds.
Across Wellington, a man was fatally injured after being impacted by a wooden fragment at a frequent walking route on earlier this week.
Also in the capital, a woman was pushed toward moving cars on a road by a intensive burst, in a moment that was captured in a viral dashcam video.
Air travel to and from the metropolis have been halted because of the gusts, while various routes and public facilities are also closed.
At the same time authorities in Canterbury have declared a crisis declaration, to facilitate recovery activities.
Work Stoppages During Severe Weather
The wild winds on today come as numerous of school staff, physicians and civil servants take part in what has been described as a "major walkout", calling for better pay and working conditions.
But the intense climate has forced them to alter various scheduled activities, with some outdoor rallies relocated inside or called off.
Similar gusts are also sweeping the neighboring country, bringing a heatwave to the remote areas.
Authorities have declared fire bans for apprehension regarding forest fires.
