Powerful gusts reaching velocities of as high as 155km/h (96mph) have resulted in around 90,000 households experiencing outages and led authorities to cancel over 100 flights, based on local media.
The gales are influencing the entire South Island and southern sections of the North Island, as stated by the country's meteorological service.
New Zealand authorities have announced uncommon severe gust advisories - the highest alert level - in central regions including these major districts.
Residents have been encouraged to avoid going outside, avoid travel, and prepare for additional utility disruptions.
The power cut appears to be affecting residences predominantly in the South Island, though authorities state that the electricity supply was being gradually reinstated.
Local media have stated that in various locations roofs have been ripped off houses, and utility poles and vegetation have been brought down by the gales.
Within the capital, a person was fatally injured after being struck by a falling limb at a popular trail walking spot on Tuesday.
Additionally in the city, a female was blown onto moving cars on a road by a strong gust of wind, in a moment that was captured in a widely shared car camera footage.
Aircraft services in and out of the urban area have been halted because of the gusts, whereas some roads and libraries are also closed.
Simultaneously authorities in Canterbury have announced a crisis declaration, to assist emergency management operations.
These intense gusts on Thursday coincide with numerous of educators, medical professionals and government employees are engaged in what has been described as a "mega strike", calling for higher wages and enhanced employment terms.
But the intense climate has forced them to modify certain arrangements, with several external protests relocated inside or called off.
Like conditions are affecting Australia, bringing a high-temperature event to the nation's interior regions.
Agencies have issued flame prohibitions for fear of forest fires.