Greytown campground is heading for a record-breaking weekend, with between 400 and 500 campers expected for the long weekend.
Manager Stan Matovich said although numbers in December were lower than the previous year due to the late summer, Waitangi weekend was set to be busy.
"It's the first time that I'm aware of it being fully booked."
While the Boxing Day to New Year period was usually the busiest time, Wellington Anniversary and Waitangi weekend looked to be busier this year, probably due to the late summer, Mr Matovich said.
If this month's weather was good, the campground might be on track for a record February, Mr Matovich said.