Freedom campers at Windsport Park, overlooking Christchurch's Avon-Heathcote Estuary, at around noon on Sunday, three hours after a bylaw states all tents and camping equipment should be gone from the site.

The number of freedom campers squeezing into a seaside Christchurch park is spiralling "out of control" and causing tensions with regular park users.

Campers at Windsport Park, overlooking the Avon-Heathcote Estuary, number more than 80 many nights of the week.

Witnesses say they have knocked over bollards to access the grass, wash their teeth in the estuary, park on the road preventing access in and out of the park and regularly urinate in the bushes. Human faeces has also been found at the site.

STACY SQUIRES/FAIRFAX NZ A freedom camper at Windsport Park brushes her teeth, before spitting into the Avon-Heathcote Estuary.

The park is one of three areas in Christchurch freedom campers can stay, under the Christchurch City Council's new Freedom Camping Bylaw, introduced in December. They are allowed to stay there for up to five nights in any 30 day period and can only camp there one hour before sunset until 9am. However, many stay during the day too.

READ MORE:

* Freedom camping bylaw makes problem go viral in other parts of Christchurch

* Council clamps down on freedom camping in Christchurch

* Mike Yardley; Christchurch freedom camping bylaw 'ludicrous'

* A quiet night out with freedom campers

* Freedom campers bring life to park

Canterbury Windsports Association committee member Joe Scorgie​ said freedom camping at the park was "out of control" because there were too many campers in the limited space.

He had counted more than 80 camping vehicles there regularly.

"The numbers of them are more than anyone thought there was going to be."

Scorgie said some days it was almost impossible for the wind and kite surfers, who had been using the park as a launch base for years, to drive through the car park.

"We had to ask people to move so we could get out. They didn't want to, but they didn't have a choice in it."

Most of the campers were friendly, he said, but there were just too many of them.

"We've been here for years and years. They [freedom campers] act like they own the area."

Kitesurfer Jackson Mills said surfers had seen faeces in the bushes and when campers used the association's outdoor shower, they were often naked.

He and Scorgie want the council to put a limit on the number of campers that can use the site.

Svetlana Randebrock​, of Germany, said it was "cool" campers were allowed to stay for free at the park.

"It's perfect. It's close to the city. It's like a big family here. We're near the water and the supermarket is close."

Freedom camper David Elahi​, of Germany, said most people used the toilets, but many urinated in the bushes and in the water.

He liked camping at the park because it was free, but said it was hard to find a spot.

Arnaud Lefort​, of Belgium, said he did not believe locals should be upset at freedom campers using the park because they had access to so many beaches and the freedom campers had "this one parking area".

The council is aware of problems arising from the new bylaw and councillors have signalled the bylaw will be reviewed much sooner than the originally planned 2017.

Council licensing and compliance manager Fiona Proudfoot​ said earlier this month, the council monitored its freedom camping sites regularly and staff would come back to council in April with a report on the issues.