Cornish Pirates will play Saturday’s Champ match against Ampthill at Camborne after damage to the Mennaye Field.
Work is ongoing to make the main grandstand at Pirates’ Penzance home safe after Storm Goretti struck last week.
The high winds tore off sections of the roof and caused structural damage to parts of the stand.
Water has also got into the electrics, meaning they have had to be shut off for safety reasons
The Rugby Football Union has given the club permission to temporarily play at Camborne’s Recreation Ground.
“It is now clearly impossible for us to play our Saturday match here and the damage is devastating,” chief executive Sally Pettipher told BBC Sport.
“The difficulties are many. They are health and safety. You need to assess and repair these things properly.
“They’re logistical because the storm tore through this part of the country and we are not alone in needing contractors with scaffolding, roofing, specialists, waste managers, health and safety officers.
“We have to notify everybody; our insurers, our national governing body, and that just adds a layer of workload that is unexpected.”
Pirates spent almost five years playing at the venue before returning to the Mennaye in 2010, where they have hosted home games ever since.
The move is expected to be just for Saturday’s match, with the club anticipating that their ground will be safe for their next home game, against London Scottish on 7 February.
“I couldn’t be more grateful to our fans, our supporters, our sponsors, for the fact that they’re willing to help us by bending over backwards to be somewhere else in a different way at a different time,” added Pettipher.
“The nicest thing is just how well everybody’s pulled together – for us it’s a real emergency and everybody is making it better.”
