Powerful gusts attaining velocities of up to 155km/h (96mph) have resulted in around 90,000 homes lacking electricity and led authorities to call off over 100 air travel services, according to domestic outlets.
The gales are affecting the whole southern region and southern parts of the North Island, per the national weather agency.
The nation's agencies have issued infrequent red wind warnings - the highest alert level - in key areas encompassing these major districts.
Residents have been advised to stay indoors, refrain from journeys, and get ready for additional electricity and network failures.
Broad Damage and Emergency Measures
The electricity loss is primarily influencing households mainly in the South Island, while officials say that power was being gradually reinstated.
Domestic outlets have reported that in some places roofs have been ripped off houses, while utility poles and vegetation have been brought down by the winds.
Across Wellington, a man was killed after being impacted by a wooden fragment at a popular trail walking spot on Tuesday.
Also in the capital, a woman was swept into moving cars on a street by a powerful blast, in a event that was captured in a viral dashcam video.
Air travel entering and leaving the urban area have been suspended as a result of the weather, whereas certain highways and community centers are not operating.
Meanwhile authorities in Canterbury have announced a state of emergency, to support recovery activities.
Strike Action Amid Extreme Conditions
The wild winds on this day come as numerous of school staff, physicians and civil servants are participating in what has been called a "significant labor action", calling for higher wages and enhanced employment terms.
But the severe conditions has compelled them to modify some of their plans, with various open-air gatherings relocated inside or called off.
Like conditions are impacting Australia, bringing a high-temperature event to the nation's interior regions.
Officials have announced burning restrictions for concern about bushfires.
