The tourism industry rallied strongly in the second quarter of this year, with visitor numbers up nearly 6 per cent.

Tourists from continental Europe climbed 6.6 per cent, while those from the United States were up 6.3 per cent and those from Britain rose 3.2 per cent.

However, there is evidence that tourists are holidaying in Ireland for shorter periods, and spending less, than previously.

Revenue growth lagged at only 2 per cent, while Irish holidaymakers abroad continue to outspend visitors here. Irish holidaymakers abroad spent €1,078 million, while tourists to Ireland spent €1,060 million.

The tourism industry said Ireland was outperforming other destinations, many of which continue to experience a slump in demand.

US visitors to mainland Europe fell 5 per cent in the first six months of this year.

There is evidence that the upward trend has continued into July and that people are holidaying at home in greater numbers than before, said Mr John Browne of Fáilte Ireland.

Mr Paul O'Toole, chief executive of Tourism Ireland, said: "The overall growth of 3 per cent in the first six months is welcome news considering the difficult global business environment that prevailed at the time.

"I am particularly pleased to see strong growth in numbers from mainland Europe, where we focused considerable marketing investment this year," he said.

"There are, however, other factors at play.

"While visitor numbers are up 3 per cent, bed-nights have only grown by 1 per cent, reflecting the impact of a declining length of stay, he added."