Severe winds reaching speeds of approximately 155km/h (96mph) have left around 90,000 households without power and led officials to cancel more than 100 air travel services, according to regional news sources.
The winds are impacting the whole South Island and southern sections of the North Island, according to the national weather agency.
Officials in New Zealand have announced rare high-level wind alerts - the top caution category - in key areas encompassing Wellington and Canterbury.
People have been urged to stay indoors, refrain from journeys, and prepare for more utility disruptions.
Broad Damage and Crisis Measures
The power cut seems to be impacting homes predominantly in the southern region, although agencies say that energy was being gradually reinstated.
Domestic outlets have stated that in some places structures have suffered roof damage, while power lines and trees have been knocked down by the gales.
Within the capital, a man was fatally injured after being struck by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a individual was blown onto oncoming traffic on a thoroughfare by a intensive burst, in a moment that was filmed in a viral dashcam video.
Aircraft services entering and leaving the city have been cancelled due to the weather, and some roads and libraries are also closed.
Simultaneously Canterbury officials have declared a state of emergency, to facilitate disaster response efforts.
Strike Action Amid Severe Conditions
The wild winds on today come as numerous of school staff, physicians and civil servants are engaged in what has been called a "significant labor action", requesting higher wages and enhanced employment terms.
But the intense climate has compelled them to modify some of their plans, with several external protests relocated inside or called off.
Similar gusts are impacting the nearby nation, causing a heatwave to the remote areas.
Officials have declared flame prohibitions for concern about bushfires.
