Powerful gales attaining speeds of as high as 155km/h (96mph) have caused approximately 90,000 households experiencing outages and compelled officials to halt over 100 aircraft departures, according to domestic outlets.
These gusts are impacting the complete South Island and southern sections of the North Island, according to the national weather agency.
Officials in New Zealand have issued rare high-level wind alerts - the most severe warning - in core zones such as these major districts.
Residents have been encouraged to avoid going outside, stay off roads, and make arrangements for more power and communication outages.
Broad Impact and Emergency Response
The power cut appears to be affecting residences mostly in the southern region, while officials report that power was being slowly brought back.
Domestic outlets have reported that in some places homes have lost their roofs, and power lines and trees have been brought down by the gales.
Within the capital, a man was fatally injured after being impacted by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a female 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.
Flights in and out of the urban area have been cancelled because of the gusts, while certain highways and community centers are not operating.
At the same time Canterbury officials have declared a crisis declaration, to facilitate disaster response efforts.
Labor Protests Amid Harsh Conditions
The wild winds on this day come as many of educators, medical professionals and government employees are engaged in what has been described as a "major walkout", requesting better pay and working conditions.
However the intense climate has compelled them to alter certain arrangements, with some outdoor rallies moved indoors or abandoned.
Like conditions are also sweeping the nearby nation, ushering in a period of extreme heat to the nation's interior regions.
Officials have declared flame prohibitions for fear of bushfires.