A road snowfall warning has been issued for State Highway 1's Desert Rd for the first day of level 2.
MetService says snow showers are expected to affect the road on Wednesday evening, when 1cm to 2cm of snow may settle near the summit.
The warning covers 5pm to 10pm Wednesday.
New Zealand outside Auckland moved to Covid-19 level 2 at 11.59pm on Tuesday night, meaning more inter-regional travel as many level 3 restrictions lift.