The ice rink and the eating areas between the two Biomes at the Eden Project were the worst affected, with staff working round the clock to get the site up and running again.
Managing director Gaynor Coley said: "We’re really pleased to be able to announce that skating will be back a month after it was put out of action.
"When the floodwater came in, it lifted up the ice and damaged the rink’s infrastructure – the team ahs worked extremely hard to fix it in time for the school holidays and Christmas.
"We wanted to give a clear signal that Cornwall is open for business when we welcomed visitors back a week after the floods, and now the reopening of the rink will help strengthen that signal in time for the Christmas holiday period."
The rink will be open every day from December 16 onwards in the run up to Christmas, with 40-minute skating sessions costing £5 on top of the entry fee to the Gardens. For rink opening times and information about special events and parent toddler events visit www.edenproject.com