Last summer Splash Planet enjoyed a record season, but this year numbers have jumped a further 20 per cent.
Manager Peran Hutchings said the numbers are "fantastic".
Last year, 116,000 people visited Splash Planet, the country's only aquatic-themed park.
"Already we are up to 126,000," he said.
"All we can say is maybe Covid has affected domestic tourism in New Zealand quite positively.