Traffic is building up around the Coromandel as holidaymakers and locals head up and down the peninsula.
Commuters in the Tairua area have spent as long as 25 minutes waiting to get through the small coastal town.
New Zealand Transport Agency spokesman Luigi Cappel said the busy traffic was not surprising.
"Tairua has just been busy on a hot holiday as you would expect.
"From what we can tell it's just holiday traffic that's just heading in and out but it's quite localised," he said.