Intense gales hitting speeds of up to 155km/h (96mph) have resulted in nearly 90,000 households experiencing outages and forced authorities to halt more than 100 flights, based on domestic outlets.
The gales are impacting the complete southern region and lower areas of the North Island, according to the weather forecasting body.
The nation's agencies have released uncommon severe gust advisories - the highest alert level - in key areas including these major districts.
People have been encouraged to stay indoors, stay off roads, and make arrangements for more utility disruptions.
Extensive Impact and Emergency Response
This outage is primarily influencing residences predominantly in the South Island, while officials say that power was being slowly brought back.
Local media have reported that in some places structures have suffered roof damage, and power lines and trees have been brought down by the gales.
In Wellington, a individual was fatally injured after being hit by a wooden fragment at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a individual was swept into moving cars on a road by a strong gust of wind, in a incident that was recorded in a viral dashcam video.
Air travel in and out of the city have been cancelled because of the weather, and some roads and libraries are also closed.
At the same time Canterbury officials have declared a emergency situation, to support disaster response efforts.
Strike Action Alongside Harsh Conditions
The wild winds on this day come as tens of thousands of teachers, doctors and other public workers take part in what has been described as a "significant labor action", requesting improved salaries and workplace environments.
However the intense climate has compelled them to alter various scheduled activities, with various open-air gatherings moved indoors or called off.
Like conditions are affecting the nearby nation, bringing a period of extreme heat to the nation's interior regions.
Agencies have declared flame prohibitions for fear of bushfires.
