A barrier will be installed at the top carpark at Pilot Bay to curb recent anti-social behaviour in the area.
Tauranga City Council said there had been recent reports of loud noise and people congregating in the carpark late into the night.
The top car park will be closed between 7pm and 5am, Monday to Sunday. The hours of operation will come into effect after daylight saving on September 26.
The boat ramp and lower car park will remain open 24/7.
The council's Spaces and Places manager, Sarah Pearce, said the behaviour taking place was unacceptable.