"I was disgusted as much as anyone else," the father said.
"But I make no excuses."
Horrified residents who found the mess the next morning called authorities.
The father ordered his son down to the beach on Wednesday morning to clean up the mess. He was joined by two Tauranga City Council workers. Together the three cleaned up the remainder of the rubbish by 2pm, the father said.
The father said he understood how upset people must have felt and acknowledged the outrage expressed online.
"Some of these comments, that's exactly what I would have said."
The father said he was aware his son was meeting with friends but was surprised to see how many alcoholic drinks had been left behind from the party.
The teenager owned up to the mess online and apologised for his actions.