"It was so hot on the site and that was a big driver of it. It wasn't so much about the consumption but that it was a really screaming hot day and everyone's on asphalt."
Conditions like this were far more likely to cause intoxication, he said.
While Mr Kneebone admitted the call put pressure on the other bars, he didn't think there had been much of a negative response from music fans.
"People were good, it was a really mellow show."
Laneway New Zealand apologised to fans for the closure on its Facebook page.
"Unfortunately due to circumstances beyond our control, the Auckland city council has decided to close down one of the main bars. We respect their decision and apologise for the inconvenience and queue times this creates."
Festival goer Charlotte Evans said she and her friends had become frustrated with the lines, which worsened once the bar was shut down.
"The lines were crazy. We were pretty pissed off," she said.
Evictions were down this year too, with only a few kicked out for intoxication and about 12 for "fence jumping", Mr Kneebone said.
Some paddle boarders scored themselves free entry when they made the effort to sneak in via the water.
"Frankly, I was quite impressed," said Mr Kneebone.
Security grabbed them and we said, 'You know what? You've paddled boarded around from another bay... congratulations.'"
Yesterday's Laneway Festival was Auckland's third and the second time it had been held at Silo Park.