Festival-goers heading to Sundown Festival at the Norfolk Showground this weekend should expect delays after congestion warnings were issued.

Eastern Daily Press: Sundown Festival 2019 at the Royal Norfolk Showground. Picture: Neil DidsburySundown Festival 2019 at the Royal Norfolk Showground. Picture: Neil Didsbury (Image: Neil Didsbury)

Transport provider First Bus has warned of delays to services 23, 23A, 24 and 24A after people travelling to the weekend's event led to a traffic slowdown on the Dereham Road.

In a tweet posted at 9.29am on Saturday, August 31, a First Bus spokesperson said: "Service 23/23A/24/24A update.

"These services may experience delays today due to expected congestion on Dereham road caused by Sundown Festival.

"Apologies for any inconvenience caused."

Eastern Daily Press: David Jones, 18, Taylor Cullen, 18, Mark Hawes, 18, arriving for Sundown Festival 2019 at the Royal Norfolk Showground. Picture: Neil DidsburyDavid Jones, 18, Taylor Cullen, 18, Mark Hawes, 18, arriving for Sundown Festival 2019 at the Royal Norfolk Showground. Picture: Neil Didsbury (Image: Neil Didsbury)

And services in the centre of Norwich are also facing delays, with the Blue Line affected by congestion.

First Bus shared an update at 9.30am, which said: "Blue Line service update.

"These services may experience delays today due to expected congestion in the Riverside area.

"Apologies for any inconvenience caused."

Eastern Daily Press: The stages, food vendors and rides set up ready for Sundown Festival 2019 at the Royal Norfolk Showground. Picture: Neil DidsburyThe stages, food vendors and rides set up ready for Sundown Festival 2019 at the Royal Norfolk Showground. Picture: Neil Didsbury (Image: Neil Didsbury)

And festival attendees can expect a dry and bright start to the day, with some patchy rain later in the afternoon.

The Met Office forecast for the East of England predicted a dry morning with "warm, bright and sunny spells", with some "cloud and patchy light rain [to] will spread east this afternoon".

The region will see a maximum temperature of 27C.