Intense gales reaching speeds of up to 155km/h (96mph) have left approximately 90,000 households experiencing outages and led agencies to halt in excess of 100 flights, based on local media.
The gales are influencing the entire South Island and lower areas of the northern region, per the national weather agency.
New Zealand authorities have announced rare high-level wind alerts - the most severe warning - in central regions encompassing these major districts.
Residents have been encouraged to stay indoors, avoid travel, and get ready for additional power and communication outages.
This outage is primarily influencing households mainly in the South Island, though officials state that the electricity supply was being gradually reinstated.
Local media have indicated that in some places structures have suffered roof damage, whereas power lines and trees have been brought down by the gusts.
Within the capital, a person was fatally injured after being hit by a falling limb at a frequent walking route on Tuesday.
Also in the capital, a female was pushed toward moving cars on a thoroughfare by a strong gust of wind, in a moment that was filmed in a viral dashcam video.
Air travel to and from the city have been halted as a result of the weather, while some roads and libraries are shut down.
At the same time authorities in Canterbury have issued a crisis declaration, to assist emergency management operations.
These intense gusts on Thursday come as many of educators, medical professionals and government employees take part in what has been described as a "mega strike", demanding better pay and working conditions.
But the extreme weather has pressured them to change various scheduled activities, with several external protests moved indoors or cancelled.
Like conditions are impacting Australia, causing a heatwave to the remote areas.
Agencies have declared fire bans for apprehension regarding forest fires.
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