Powerful winds reaching speeds of approximately 155km/h (96mph) have caused around 90,000 households lacking electricity and forced officials to halt more than 100 flights, as reported by local media.
These gusts are impacting the complete southern region and southern parts of the North Island, as stated by the country's meteorological service.
The nation's agencies have released rare red wind warnings - the most severe warning - in central regions such as Wellington and Canterbury.
Residents have been advised to avoid going outside, refrain from journeys, and make arrangements for further power and communication outages.
Widespread Impact and Crisis Measures
This outage is primarily influencing residences mainly in the southern region, though officials say that energy was being restored progressively.
Domestic outlets have reported that in various locations structures have suffered roof damage, and power lines and trees have been knocked down by the winds.
In Wellington, a person was fatally injured after being impacted by a wooden fragment at a well-known hiking path on Tuesday.
Additionally in the city, a female was swept into oncoming traffic on a street by a powerful blast, in a moment that was captured in a viral dashcam video.
Air travel in and out of the city have been suspended because of the gusts, while various routes and public facilities are also closed.
Meanwhile Canterbury officials have declared a emergency situation, to support recovery activities.
Labor Protests Amid Severe Conditions
The wild winds on this day occur while many of educators, medical professionals and government employees are participating in what has been termed a "major walkout", demanding better pay and working conditions.
But the extreme weather has compelled them to alter some of their plans, with several external protests moved indoors or cancelled.
Similar gusts are also sweeping the nearby nation, causing a heatwave to the remote areas.
Agencies have announced fire bans for fear of wildfires.