Consumer uncertainty is the biggest risk facing the tourism sector, according to Tourism Ireland CEO Niall Gibbons.
He told the 'Irish Independent' that research carried out by the all-Ireland body found that 10-20pc of UK tourists are thinking of postponing overseas trips, as a fall in the value of sterling and Brexit weigh on their spending plans.
He added that two out of every five visits by British tourists here happen in the traditionally quieter first and last quarters of the year, thereby helping spread out the spending.
In a Brexit-focused Budget earlier this week, the tourism sector was given a €40m cushion, with Finance Minister Paschal Donohoe promising more State money for the industry, should the UK crash out of the European Union without a deal.
Mr Gibbons said the money was "very positive". However, he added that the body hopes it does not have to use it.
An additional €6m in funding will be used to "bolster the reassurance message and allow the body to kickstart its 2020 campaigns".