Fans chanted "Gaga ... Gaga" as her motorcade pulled into the hotel's driveway, and some were rewarded with a brief chat and photo with their idol.
"I'm never washing my hands again," said one fan after posing for a photo with the singer.
"She's a very special performer, it's great for her to come to New Zealand and it was worth it standing in the rain waiting for her," said another.
Fans who have left it to the last minute will be pleased to know there are still tickets left to the three Gaga shows, available from Ticketmaster.
Online auction site Trade Me also has several users selling tickets.
Lady Gaga's Born This Way Ball
Where: Vector Arena, Auckland
Where: Thursday, Friday and Sunday, 7.30pm
- Herald online