International tourists of nearly 900,000 visited Ireland in September, down 9% on the same month in 2019.
New figures from the Irish Tourism Industry Confederation (ITIC) show so far this year, visitor numbers are down 20%.
338,000 people visited from continental Europe last month, down 5% on 2019 - making it the strongest performing market.
Meanwhile, the North American market continued to recover, with 230,000 visitors during the month.
The ITIC said it was concerned that the recovery of the sector would be threatened by soaring cost inflation, the energy crisis and supply constraints.
RTE News has more from the ITIC