Thousands of Reading Festival revellers have been spotted braving the rain while setting up camp at the event ahead of a rainy Bank Holiday weekend. An estimated 100,000 people are expected to flock to the open-air concert - which runs from Thursday, August 27 to Sunday, August 30 - to see headliners including Charli XCX, Florence + The Machine and Chase & Status. But it appears Britain's long summer spell of hot and dry weather has ended just as the music festival, held at Little John's Farm, is set to begin - and its attendees have come prepared. On Friday, downpours with some sunny spells are set to begin in Reading from 12pm, with drizzlier conditions carrying through until the early hours of Saturday morning -during performances including Charli XCX, Fontaines D.C and Skepta. By Saturday, that drizzle will turn to heavier rains beginning at around 7am. This will continue until approximately 9pm, when acts like Raye, Dave and Sombr will take the stage. On Sunday - the festival's final day - conditions will improve slightly; however, light rain is expected to run from 9am straight through until Monday, coinciding with performances like Florence + The Machine and Chase & Status. Yet the impending downpours did not seem to dampen the spirits of festival goers, who were pictured smiling and laughing with friends while clad in waterproof clothing to set up camp. Others were also pictured trudging suitcases up muddy and damp paths to their campsite, using bin liners and other water-repellent materials to protect their belongings. Ahead of a rainy Bank Holiday weekend, Reading Festival attendees were spotted trekking to set up camp clad in water protective gear One festival goer was pictured wearing a waterproof poncho to protect her from the elements The impending downpours did not seem to dampen the spirits of some festival goers, who were pictured smiling and laughing together Revellers were pictured in welly boots and waterproof jackets - the perfect dress for a wet weekend Attendees had to drag their belongings up muddy and wet ground as the drizzly conditions settled in One festival goer seemed unbothered by the rain - and rather pleased with her welly boots This attendee made sure her hair stayed protected from the rain in a bonnet Some people got creative to ensure their belongings stayed dry under waterproof materials At Leeds Festival - held concurrently with Reading - weather conditions painted a similar - if not worse - story. Showers are expected all throughout the day on Friday and will continue into Saturday, when light rain will begin at 12pm and last into Sunday morning. By Sunday - when acts like Dave, Raye and Sombr hit the stage - heavier rain will pour, with showers peaking at 3pm and continuing until around 1am on Monday morning.And on social media, attendees of Reading and Leeds Festivals were quick to express their dismay at the dismal weather conditions following one of Britain's hottest summers on record. Taking to X, one user attending Reading reflected: 'First big festival I have been to in years and it looks like storms, torrential rain, mud and misery all weekend.'The universe truly does hate me.'Another lamented: 'Reading Festival tents and stages are up, just in time for the p***ing rain.'One user, who works close to the festival site, also weighed in saying: 'I work literally yards away from Reading festival, it's not rained here since April/May. The Met Office has issued a yellow weather warning for thunder and storms covering Wales and parts of southern England on Thursday The yellow alert will remain in place on Friday, covering the east coast of England'Early birds started arriving yesterday, it's now been p***ing down since about 3am & still is.'The rain comes as the Met Office issued yellow weather warnings for rain and thunderstorms for Thursday and Friday covering much of Wales and southern England. On Thursday, the alert covers areas including Cardiff, London, Manchester, Birmingham and Norwich; however, by Friday, the alert is only active for eastern coastal areas like Hull and Norwich. Earlier on Thursday, the Met Office warned of the rainier conditions on X: 'A band of heavy, possibly thundery rain, continues to sweep northwestwards this evening into Northern Ireland, northern England and southern Scotland''Further southeast, another cluster of thunderstorms is likely to push up from France, bringing heavy rain, lightning and hail.'