Prince Harry and Meghan Markle look set to walk down the aisle amid glorious sunshine in Windsor and across the UK.
UK weather forecast: Royal wedding weekend to see glorious sunshine and 20C heat as Prince Harry and Meghan Markle make their vows
All eyes have been on the weather forecast as final preparations are under way for the high-profile nuptials this Saturday.
Now Met Office meteorologists have revealed wedding spectators could bask in temperatures of around 20C.
And Brits heading out to celebrate at street parties throughout the country will enjoy bright and clear conditions.
Met Office spokesman Grahame Madge told the Standard people in the UK could expect"very good prospects" as the couple's May 19 wedding at St George's Chapel in Windsor fast approaches.
He said: "As we go through this week [forecasters'] confidence will build for fine conditions on Saturday.
"We are looking at temperatures of around 20C as the daytime high for parts of the south-east."
Mr Madge said the warmest places in the UK will be in the south-east, with the mercury possibly rising "just above" 20C in parts.
This means the thousands expected to descend on Windsor in the hopes of catching a glimpse of Harry and Meghan on their wedding day should be graced with sunny skies.
The Met Office spokesman said there is a "very low chance of rain" on the Royal wedding day.
He added: "I can't say there is no chance of rain, but at the moment it looks to be fine."
Meanwhile, most of mainland UK "will be clear and bright", Mr Madge said, although places in the north-west could see some rain.
The forecast will come as welcome news to many of those hosting street parties and other special events to mark the occasion.
This year, the BBC waived the TV licence fee for communities wanting to watch the wedding.
Hundreds of street party applications have been made to councils to celebrate the wedding, according to reports.
Punters have also been placing bets on the Royal Wedding day weather, with Ladbrokes today slashing odds on the happy couple marrying on the hottest day of the year so far down to 3/1.
Despite the positive outlook for the majority of Britain, forecasters did warn of some less than ideal conditions in north-western parts of the UK and western parts of Scotland.
A weather system off the coast of Iceland may affect regions such as the Hebrides, bringing slightly stronger winds, some clouds and rain, Mr Madge said.
He added: "But it's nothing to worry about. Conditions are not going to be as fine and clear, so just not as good as the rest of the UK."
The forecaster said the mercury could drop to around 14C in north-west Scotland.
The royal service will commence at 12pm and will be televised across media outlets.
After the couple have said “I do,” they will embark on a carriage procession, commencing at 1pm along a route including Castle Hill, High Street, Sheet Street, Kings Road, Albert Road, Long Walk and finally Windsor Castle.
Revellers heading to Windsor to enjoy the wedding have been urged to wear "sensible clothes".
The Royal Borough of Windsor and Maidenhead last week reminded members of the public to dress for "a long day spent outside", with enough food, water, sunscreen, waterproof clothing and essentials.
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