Intense gales hitting speeds of approximately 155km/h (96mph) have caused approximately 90,000 homes experiencing outages and compelled agencies to call off over 100 flights, according to domestic outlets.
The winds are impacting the complete South Island and lower areas of the North Island, according to the national weather agency.
The nation's agencies have announced uncommon red wind warnings - the top caution category - in key areas including these major districts.
Locals have been encouraged to avoid going outside, stay off roads, and make arrangements for further utility disruptions.
Extensive Destruction and Emergency Response
This outage seems to be impacting households mainly in the South Island, though officials report that energy was being gradually reinstated.
Local media have indicated that in certain areas structures have suffered roof damage, whereas power lines and trees have been toppled by the winds.
Across Wellington, a person was fatally injured after being hit by a tree branch at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a woman was pushed toward moving cars on a street by a intensive burst, in a moment that was recorded in a popular vehicle recording.
Flights in and out of the urban area have been halted because of the gusts, whereas some roads and libraries are not operating.
Simultaneously Canterbury officials have issued a state of emergency, to assist disaster response efforts.
Work Stoppages Amid Harsh Weather
These intense gusts on Thursday occur while tens of thousands of educators, medical professionals and government employees are engaged in what has been termed a "significant labor action", demanding improved salaries and workplace environments.
But the intense climate has forced them to modify some of their plans, with several external protests shifted to interior venues or abandoned.
Like conditions are affecting the nearby nation, bringing a heatwave to the remote areas.
Agencies have issued burning restrictions for concern about bushfires.