Jenna Lee of the English National Ballet in the rain at Hay
A fire crew was called to the Hay festival in Powys this afternoon after a marquee was flooded in heavy rain.
Peter Florence, festival director, said that although some activities have had to be moved, it had not affected Sunday's schedule.
Events on Sunday include Salman Rushdie, former US president Jimmy Carter and Fay Weldon.
President Carter on his arrival in the town said: "I hope it's raining as much as this on my farm in Plains, Georgia."
Mid and West Wales Fire and Rescue Service said they pumped "a large quantity of flood water" from the site.
The call-out at 1200 BST followed a morning of heavy rain on the third full day of the literary festival.
Wooden pallets were laid on the grass for visitors to walk on.
One festival-goer Ben Bryant, 22, said: "It all adds to the atmosphere."
The Cardiff University student added: "I don't think it's a problem, when you go to summer festivals in the UK you expect the weather to be pretty rotten. It's fine though because we're under cover."
Fellow student Amy Harris, 22, said: "As long as you've got your wellies and waterproofs on it's not a problem."
Mike Barnes, 61, from Stockport, Cheshire, was less optimistic.
He said: "We are actually thinking of going home tomorrow if it stays like this because it's warmer in the north of England.
"You only have to look around to contrast the scene today to yesterday when children were running around and people were sitting in the deck chairs."