The Atlantic giant pumpkin grown by Dale Oliver weighed in at 867 kilograms.
Festival organiser John Leadbetter said it was a great achievement for Oliver and the festival.
While it did produce a record-breaking pumpkin this year, entries to the festival were down due to unfavourable growing conditions.
"It's just been too hot for it. We had hot, dry weather, and then we went to hot, humid weather, and they don't like that. They like to be dry and cool," Leadbetter said.