Powerful gusts hitting speeds of up to 155km/h (96mph) have resulted in approximately 90,000 properties lacking electricity and led authorities to call off more than 100 flights, as reported by regional news sources.
The gales are affecting the whole South Island and southern parts of the northern region, per the country's meteorological service.
The nation's agencies have released rare severe gust advisories - the highest alert level - in key areas such as these major districts.
Residents have been encouraged to avoid going outside, avoid travel, and make arrangements for further electricity and network failures.
Extensive Damage and Emergency Response
The electricity loss seems to be impacting households mainly in the southern region, while authorities say that energy was being restored progressively.
Local media have reported that in certain areas homes have lost their roofs, whereas power lines and trees have been toppled by the gales.
In Wellington, a individual was killed after being impacted by a tree branch at a frequent walking route on Tuesday.
Meanwhile in Wellington, a individual was swept into oncoming traffic on a thoroughfare by a strong gust of wind, in a incident that was recorded in a widely shared car camera footage.
Flights entering and leaving the city have been cancelled as a result of the winds, and certain highways and community centers are not operating.
Meanwhile Canterbury officials have declared a crisis declaration, to facilitate emergency management operations.
Labor Protests During Severe Weather
The wild winds on today occur while tens of thousands of teachers, doctors and other public workers are participating in what has been described as a "significant labor action", demanding higher wages and enhanced employment terms.
However the extreme weather has forced them to change various scheduled activities, with some outdoor rallies relocated inside or called off.
Similar gusts are affecting Australia, causing a heatwave to the country's outback.
Authorities have announced flame prohibitions for concern about wildfires.