Swine flu and the global financial crisis have resulted in the number of international visitors staying in Auckland dropping significantly.
Statistics New Zealand says there was a 14% drop in overseas visitors who stayed in Auckland during May, compared with the same month last year.
Hotel Council board member Matt Taplin says swine flu has been a major contributor to the slowdown in international visitors.
He says this is in addition to a decline due the global financial crisis.
Mr Taplin says the biggest decrease of visitors is from China and South Korea, who make up a large proportion of tourists at this time of year.
He says Auckland's problems are not unique - other countries are facing similar declines.