Intense gusts hitting speeds of as high as 155km/h (96mph) have caused nearly 90,000 homes experiencing outages and forced agencies to cancel more than 100 flights, based on local media.
These gusts are influencing the whole South Island and lower areas of the northern region, as stated by the country's meteorological service.
The nation's agencies have released rare red wind warnings - the top caution category - in key areas encompassing these major districts.
Residents have been encouraged to stay indoors, refrain from journeys, and get ready for additional electricity and network failures.
Extensive Destruction and Emergency Response
The electricity loss is primarily influencing households mostly in the southern region, although authorities report that energy was being gradually reinstated.
Domestic outlets have stated that in certain areas homes have lost their roofs, and utility poles and vegetation have been brought down by the gales.
Across Wellington, a individual was fatally injured after being impacted by a wooden fragment at a well-known hiking path on Tuesday.
Also in the capital, a female was pushed toward moving cars on a street by a strong gust of wind, in a event that was recorded in a popular vehicle recording.
Aircraft services to and from the urban area have been cancelled as a result of the winds, while various routes and public facilities are not operating.
Meanwhile local leaders have announced a emergency situation, to facilitate disaster response efforts.
Labor Protests Amid Extreme Conditions
The powerful gales on today come as tens of thousands of school staff, physicians and civil servants are participating in what has been called a "significant labor action", demanding better pay and working conditions.
Yet the intense climate has pressured them to alter various scheduled activities, with various open-air gatherings moved indoors or called off.
Comparable winds are impacting the neighboring country, causing a period of extreme heat to the remote areas.
Agencies have announced flame prohibitions for fear of forest fires.