Severe winds attaining velocities of as high as 155km/h (96mph) have left around 90,000 properties experiencing outages and forced authorities to call off more than 100 aircraft departures, according to domestic outlets.
These gusts are affecting the whole South Island and southern parts of the northern region, per the national weather agency.
New Zealand authorities have released uncommon high-level wind alerts - the top caution category - in key areas such as Wellington and Canterbury.
People have been encouraged to remain inside, avoid travel, and prepare for more electricity and network failures.
This outage is primarily influencing households mostly in the southern region, although authorities report that the electricity supply was being slowly brought back.
Local media have stated that in some places structures have suffered roof damage, whereas utility poles and vegetation have been toppled by the gales.
In Wellington, a individual was fatally injured after being impacted by a falling limb at a well-known hiking path on Tuesday.
Also in the capital, a female was swept into approaching vehicles on a thoroughfare by a intensive burst, in a event that was recorded in a viral dashcam video.
Air travel entering and leaving the urban area have been halted as a result of the gusts, and certain highways and community centers are also closed.
Meanwhile local leaders have announced a crisis declaration, to support disaster response efforts.
The powerful gales on today coincide with numerous of teachers, doctors and other public workers are participating in what has been termed a "major walkout", calling for improved salaries and workplace environments.
However the intense climate has compelled them to change certain arrangements, with several external protests relocated inside or cancelled.
Comparable winds are affecting the nearby nation, bringing a heatwave to the country's outback.
Authorities have announced burning restrictions for fear of wildfires.
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