Severe winds reaching speeds of approximately 155km/h (96mph) have caused nearly 90,000 households experiencing outages and led agencies to call off over 100 air travel services, according to local media.
These gusts are influencing the whole South Island and southern parts of the North Island, according to the national weather agency.
New Zealand authorities have announced infrequent red wind warnings - the top caution category - in core zones including these major districts.
Locals have been advised to remain inside, refrain from journeys, and make arrangements for further power and communication outages.
Widespread Damage and Crisis Response
The electricity loss is primarily influencing households mostly in the South Island, while agencies say that power was being gradually reinstated.
Regional news have reported that in certain areas structures have suffered roof damage, whereas trees and electricity poles have been toppled by the winds.
In Wellington, a man was fatally injured after being hit by a falling limb at a frequent walking route on earlier this week.
Meanwhile in Wellington, a female was blown onto moving cars on a road by a strong gust of wind, in a moment that was filmed in a popular vehicle recording.
Aircraft services entering and leaving the urban area have been suspended because of the weather, and various routes and public facilities are not operating.
Meanwhile Canterbury officials have declared a crisis declaration, to facilitate emergency management operations.
Labor Protests During Harsh Weather
These intense gusts on this day occur while numerous of educators, medical professionals and government employees are participating in what has been called a "mega strike", calling for higher wages and enhanced employment terms.
Yet the severe conditions has pressured them to modify certain arrangements, with several external protests shifted to interior venues or abandoned.
Like conditions are affecting the nearby nation, bringing a heatwave to the country's outback.
Officials have declared flame prohibitions for fear of wildfires.
