The number of British people visiting Ireland continued to fall between June and August, latest figures from the Central Statistics Office show.
UK visits during the period fell by 7.5% to 1,047,300.
For the year to August there were 2,483,200 British visitors to Ireland, which is over 190,000 - or 7% - lower than for the same time frame in 2016.
Number of trips to Ireland from UK visitors down again pic.twitter.com/HKDiomh4ao
— RTÉ Business (@RTEbusiness) September 29, 2017
Tourism bodies here have attributed the significant drop-off in the number of British visits to Ireland to the 15% fall in the value of sterling since the Brexit vote, which has made the country much more expensive for people using the pound.
Immediately prior to the referendum in June 2016 one euro was worth £0.765, however, within two weeks this rate jumped by over nine pence to €1=£0.858, and at the beginning of September the euro breached the 93-pence barrier - hitting an eight-year high against sterling.
However, today's CSO data also show Ireland has somewhat compensated for the reduction in British visits by attracting overseas traffic from other areas.
Overall, in the June-August period, the total number of trips to Ireland increased by 1.7% to 3,141,800, an increase of 53,800 compared to the same time frame 12 months earlier.
Trips by residents of European countries other than the UK (Other Europe) increased by 2.4% to 1,122,200, and visits from North America were 13.3% higher at 756,500.
Visits from the rest of the world rose by 12.5% to 215,700 during the three-month period.
The Irish Tourism Industry Confederation (ITIC) has said the figures are a reminder of the "real and material" impact of Brexit.
ITIC CEO Eoghan O'Mara Walsh said: "Tourism is Ireland's largest indigenous industry employing 228,000 people nationwide and our UK tourists are vital as they visit all year and travel throughout the country.
"The Government must introduce new measures in the upcoming Budget that will both defend the UK market and help diversify into new markets".
The ITIC has called on a €20m investment fund to help "Brexit-proof" the sector.
Minister for Tourism Shane Ross said: "While I welcome the overall growth in visit numbers to Ireland during the peak summer months (+1.7%), the persistent decline in the numbers visiting from Great Britain continues to be a concern.
"Growth from North America, mainland Europe and other areas has allowed us to maintain upward momentum.
"However, these figures show that we cannot become complacent as the overall growth rate has slowed somewhat," said Mr Ross.
