Brits are set to enjoy a sizzling Bank Holiday weekend with highs of 25C and millions expected to hit the road in search of beaches and parks.
The Met Office has forecasted the long weekend to be dry and bright but people heading off in cars have been warned they may find themselves stuck in long traffic jams.
The RAC estimates a huge 16.7 million leisure trips are planned on UK roads for between Friday and Monday.
Hopes of stunning late summer weather will possibly seeing even more people jumping in their car for a day trip or last-minute break.
Most of the UK is set to be dry and bright for the duration of the three-day weekend after weeks of wetter than usual weather for August, the Met Office said.
The best conditions can be expected in Northern Ireland and western Scotland on Saturday, but there is likely to be fine, dry and settled weather in most other areas too.
As the weekend progresses, the warmest temperatures are expected to be in southern England, with highs of 22C or 23C, and the potential for an isolated 24C or 25C.
Revellers at the Reading and Leeds Festivals can enjoy bright conditions over the weekend, with highs potentially reaching 21C in Berkshire on Sunday and 17C in Yorkshire.
However, those camping in Leeds should pack warm layers, with temperatures set to drop to between 10C and 11C overnight.
Met Office spokesman Grahame Madge said: "It will be a largely fine and settled weekend; there's very little - if any - rain in the forecast."
He said conditions are expected to cool slightly going into Monday.
But people will be hoping getting to their destinations will not be complicated by heavy traffic.
At 4pm on Friday there was "severe" congestion on a number of motorways in England including on the M1, M5, M6, M25 and M56, according to the National Highways website.
There was also stationary traffic on the A303 near Stonehenge, Wiltshire, which is a popular route for people travelling towards the South West.
AA president Edmund King described the M25 as "full", adding that other major roads were "very busy".
RAC Breakdown spokesman Rod Dennis said "bumper-to-bumper bank holiday traffic" was expected, especially on the most popular holiday routes.
He urged motorists to carry out essential checks on their car, such as ensuring tyres are properly inflated and have plenty of tread, and that oil, coolant and screenwash are at the correct levels.
National Highways said about 98 per cent of England's motorways and major A roads were free of roadworks over the weekend.
Transport analytics firm Inrix had urged motorists to avoid setting off for getaway journeys on Friday afternoon due to heavy traffic.
Inrix analyst Bob Pishue said: "Drivers hitting the road for one last getaway before the end of summer should expect long delays on key corridors.
"Knowing when and where congestion will build can help drivers avoid the stress of sitting in traffic."
Early-morning on Saturday:
A few showers affecting the far south-east later, while thicker cloud brings some drizzle to both north-east England and north-west Scotland at times. Variable cloud and clear spells elsewhere with a few fog patches developing.
Saturday:
Scattering of showers across south-east England, with further drizzle in the far north, else dry with variable cloud and spells of sunshine. Warmer than on Friday.
Outlook for Sunday to Tuesday:
Remaining fine and dry with the best of any warm sunshine in the west. However, cloudier and cooler for eastern parts where it will be breezy with some light showers.
