The UNESCO World Heritage site of Sceilg Mhichíl in Co Kerry will reopen for the 2023 season on 13 May, when guides will be back on the island, it has been announced.
Visits are prohibited before this, when the early medieval monastic site is unmanned.
Dogs and other animals are not allowed at any time and visitors are reminded to be wary of falling rocks.
"This is a particularly vulnerable site and visitors are therefore asked to cooperate with our efforts to protect this monument," the Office of Public Works (OPW) said.
The OPW also said that as always, the opening time will be dependent on favourable weather, sea and island conditions.
No closing date has been given, but usually the island closes at the end of September.
"Sceilg Mhichíl is one of Ireland's most iconic heritage sites and plays an important role in the local tourism economy, which we are proud to support through this and other OPW sites in the county," said Minister of State Patrick O'Donovan.
"Sceilg Mhichíl is undoubtedly one of the most challenging sites in the care of the OPW," the minister said, referring to its selection recently as one of ten global sites for a study on climate change.
Senior Conservation Architect at the OPW Fergus McCormick said the island is being prepared for visitors when tours resume in May.
This involves land-based training for the guides and our staff in health and safety and radio and rope access, he explained.
Mr McCormick added that staff will go to the island and start the maintenance works after Easter.
He said the Star Wars effect "substantially increased" the level of demand for visits but he expects this will decrease over time.
Mr McCormick said numbers of visitors are capped at 180 a day, which is 15 boats carrying 12 people a day.
