The port of Holyhead said it intended to partially reopen on 16 January after its ferry berths were damaged during storm Darragh.
The port has remained closed since 7 December but Terminal 5 is now estimated to reopen later this month, subject to weather conditions.
Holyhead port said it understood the closure had had a significant impact on trade and it was aware of the disruption caused.
“The safety of our passengers and colleagues remains our top priority,” Holyhead Port Authority said in a statement.
“We will continue to prioritise rigorous assessments and repair work to ensure that the berths meet the highest safety standards before reopening.”
Irish Ferries said it welcomed the announcement and that it was “committed to continuing its flexible approach to vessel deployment at this challenging time”.
It added: “With clarity now on the situation for the coming weeks, Irish Ferries will continue to review what further route measures are required to ensure the needs of its passenger and freight customers are met.
“With a phased re-opening plan of Holyhead port that involves more limited berth availability, Irish Ferries has agreed a timetable with the other operator that will allow Irish Ferries to operate full schedules into Terminal 5.”
Around two million passengers use Holyhead each year and approximately 1,200 lorries make the crossing every day.
