Intense gales attaining speeds of approximately 155km/h (96mph) have resulted in approximately 90,000 properties lacking electricity and led agencies to cancel more than 100 air travel services, according to local media.
The winds are influencing the whole South Island and lower areas of the northern region, according to the weather forecasting body.
New Zealand authorities have announced rare red wind warnings - the most severe warning - in central regions including these major districts.
Residents have been advised to remain inside, avoid travel, and make arrangements for additional electricity and network failures.
The electricity loss is primarily influencing households mainly in the South Island, while agencies state that the electricity supply was being gradually reinstated.
Regional news have stated that in some places homes have lost their roofs, and power lines and trees have been brought down by the winds.
Across Wellington, a individual was fatally injured after being struck by a falling limb at a popular trail walking spot on Tuesday.
Also in the capital, a individual was pushed toward approaching vehicles on a thoroughfare by a intensive burst, in a incident that was filmed in a widely shared car camera footage.
Air travel entering and leaving the urban area have been halted because of the winds, while some roads and libraries are also closed.
At the same time Canterbury officials have announced a state of emergency, to facilitate emergency management operations.
The powerful gales on Thursday coincide with tens of thousands of teachers, doctors and other public workers are engaged in what has been termed a "mega strike", calling for improved salaries and workplace environments.
But the intense climate has forced them to modify various scheduled activities, with some outdoor rallies shifted to interior venues or abandoned.
Like conditions are impacting the neighboring country, ushering in a heatwave to the remote areas.
Officials have announced fire bans for fear of wildfires.
Maya Rivers is a passionate angler and outdoor writer with over a decade of experience exploring freshwater and saltwater fishing across North America.