The number of visits from Britain dropped by 6.8 percent to 1.4 million in the first five months of the year, when compared with the corresponding period in 2016, according to new figures on Tuesday.
However, the figures from the Central Statistics Office (CSO) showed the overall figures remain positive despite the continuous decrease of British visitors.
The CSO figures showed overall trips to Ireland were up by 3.1 percent to 3.6 million visits.
North America registered an increase of 23.6 percent while visits from mainland Europe were up by 4 percent. Visits from the rest of the world increased by 21.7 percent.
Market analysts here are worried about the dampening effect of Brexit on British visitors to Ireland, saying that the impact of Brexit was already damaging Irish tourism.
They added that there will be probably more decrease in British visitors.
Tourism is one of Ireland’s most important economic sectors and has significant potential to play a further role in Ireland’s economic renewal.
The year 2016 was a record-breaking year for overseas tourism to Ireland, with almost 9.6 million people arriving here, an increase of 10.9 percent, or 941,300 additional overseas visitors, when compared with 2015.