The company expects annual net profit will be down about 14 per cent because of the coronavirus impact on tourism, the Australian bushfires and the previously advised problems in its US business.
It has cut its dividend from 13 cents a share to 10 cents a share.
Chief executive Grant Webster said the company had a strong balance sheet and market position.
''We have confidence in the future of [the business], despite the difficult trading environment in some markets at present. The teams globally are intensely focused on performance and delivery in every aspect of the business".
Webster and chairman Rob Campbell said the global situation with Covid-19 continued to remain uncertain, however, at this stage, the company did not consider there to be any additional information that causes any change to its full-year assumptions.
The impact of this coronavirus outbreak has been greatest in the Waitomo business which attracted large numbers of Chinese visitors.
The Australian bush fires caused cancellations in late January and February, but the greater concern was the lower forward bookings from the long-haul markets.
''We have since experienced a rebound and do not expect the impact to be material to the total business in the remainder of this financial year.''
It is not only leisure travel that is affected by the coronavirus outbreak. Overnight more details of corporates cancelling trips for staff out of duty of care obligations were reported.
Swiss food giant Nestle, the maker of Nespresso, Kit Kat and San Pellegrino, told its 291,000 employees worldwide not to travel internationally for business until March 15, while domestic travel should be replaced by "alternative methods of communication where possible." French cosmetics maker L'Oréal, which employs 86,000 people and owns the Maybelline and Lancome brands, issued a similar ban until March 31.
The coronavirus has spread to more than 50 countries and infected more than 80,000 people since the first outbreak in Wuhan in central China.