Condor Ferries will return to Weymouth next summer if work is completed on the harbour wall.
The Dorset-based operator was forced to move all services to Poole after damage to the ferry berth at Weymouth.
Weymouth and Portland Borough Council will spend nearly £4 million of public money to repair the harbour wall.
Captain Fran Collins, Opeartions Director at Condor Ferries said: "We continue to liaise closely with Weymouth and Portland Borough Council regarding the planned works to the harbour wall, and are pleased to confirm that we will be returning to operating regular sailings from Weymouth next summer, subject to the work being completed.
"As in previous years, we will operate sailings from both Poole and Weymouth next summer, offering passengers the opportunity to select their preferred departure port."
Regular fast services from Weymouth to the Channel Islands and St Malo in France are due to return from July 17 2013.