Intense gales reaching speeds of approximately 155km/h (96mph) have caused around 90,000 homes lacking electricity and led agencies to call off in excess of 100 air travel services, according to local media.
These gusts are influencing the entire southern region and southern parts of the North Island, according to the national weather agency.
Officials in New Zealand have released uncommon severe gust advisories - the highest alert level - in key areas encompassing these major districts.
People have been urged to remain inside, refrain from journeys, and get ready for more electricity and network failures.
Widespread Damage and Crisis Response
The power cut seems to be impacting households mostly in the southern region, although authorities say that energy was being gradually reinstated.
Local media have stated that in various locations homes have lost their roofs, and power lines and trees have been knocked down by the winds.
Across Wellington, a man was lost his life after being struck by a falling limb at a well-known hiking path on Tuesday.
Also in the capital, a individual was pushed toward approaching vehicles on a road by a strong gust of wind, in a moment that was recorded in a viral dashcam video.
Aircraft services in and out of the urban area have been halted due to the weather, and some roads and libraries are also closed.
Simultaneously local leaders have issued a emergency situation, to assist emergency management operations.
Strike Action Amid Harsh Weather
The powerful gales on today occur while many of educators, medical professionals and government employees are participating in what has been termed a "major walkout", calling for better pay and working conditions.
However the severe conditions has pressured them to change some of their plans, with some outdoor rallies moved indoors or abandoned.
Similar gusts are impacting Australia, causing a heatwave to the nation's interior regions.
Agencies have issued fire bans for apprehension regarding bushfires.