Severe gusts reaching speeds of as high as 155km/h (96mph) have left nearly 90,000 properties lacking electricity and led officials to halt more than 100 flights, as reported by local media.
The winds are affecting the complete South Island and southern sections of the North Island, according to the national weather agency.
Officials in New Zealand have released rare red wind warnings - the highest alert level - in central regions encompassing these major districts.
Residents have been urged to stay indoors, avoid travel, and prepare for additional power and communication outages.
Widespread Damage and Crisis Response
The power cut seems to be impacting households predominantly in the southern region, though agencies say that power was being slowly brought back.
Local media have indicated that in certain areas roofs have been ripped off houses, while power lines and trees have been toppled by the gales.
Within the capital, a individual was fatally injured after being impacted by a wooden fragment at a frequent walking route on earlier this week.
Meanwhile in Wellington, a woman was blown onto oncoming traffic on a road by a powerful blast, in a moment that was filmed in a viral dashcam video.
Aircraft services in and out of the urban area have been halted as a result of the winds, while some roads and libraries are also closed.
Simultaneously local leaders have announced a crisis declaration, to facilitate disaster response efforts.
Strike Action Amid Extreme Conditions
The wild winds on today come as tens of thousands of school staff, physicians and civil servants take part in what has been termed a "major walkout", calling for higher wages and enhanced employment terms.
But the intense climate has compelled them to change various scheduled activities, with some outdoor rallies relocated inside or cancelled.
Like conditions are affecting Australia, causing a high-temperature event to the remote areas.
Agencies have issued fire bans for apprehension regarding wildfires.
