Prime Minister John Key has been booed off stage at today's Big Gay Out festival by a group of vocal anti-Trans Pacific Partnership protesters.

Mr Key, wearing a pink polo shirt, appeared to cut short his speech at the event in Pt Chevalier as he was drowned out by a group of about 30 protestors yelling anti-TPP slogans.

Speaking at today’s Big Gay Out festival in Auckland, Prime Minister John Key said the people of Christchurch were “resilient”. He was pleased no one had been seriously injured in today’s violent quake but said it was unfortunate that it came so close to the five-year anniversary of the killer February 2011 earthquake.

"[We are] supporting the gay and lesbian community, we support a message to keep safe, and we want you to do that," he told the crowd in a brief speech.

Pink glitter was also thrown at Mr Key and his contingent.

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But despite a large and loud group of protesters, many at the event were positive about the Prime Minister's presence, opting to pose for selfies with him.

National's Auckland Central MP Nikki Kaye also faced a chorus of boos when she spoke.

Speaking to reporters afterwards, Mr Key said he had expected the reaction.

He downplayed the protest, saying it was from a small group of individuals who did not support the National-led Government.

Mr Key has previously received a warm reception at the Big Gay Out, which he attends every year.