Rain is likely to fall on King Charles’ parade after his coronation, with forecasts predicting a 70 per cent chance of showers for the afternoon of Saturday, May 7.
The Met Office has a wet outlook which means royal fans might need to wear their raincoats and take their umbrellas.
Met Office spokeswoman Nicola Maxey said: “We’ve got quite a showery picture. Friday is going to be a mixture of heavy rain and showers and thunderstorms.”
She said London may stay dry on Saturday morning, but that showers may develop through the afternoon.
The coronation ceremony at Westminster Abbey will end at 1pm and the newly crowned King and Queen will begin the procession back to Buckingham Palace in the gold state coach.
Around 4,000 sailors, soldiers, aviators and other military personnel from across the UK and the Commonwealth will accompany Charles and Camilla on their return procession.
There will be more than 1,000 route liners from the Army, RAF and Royal Navy.
Charles and Camilla are expected to enter Buckingham Palace through the centre arch at 1.33pm.
High pressure across the UK at the start of week brings mainly dry conditions for most. This high pressure moves eastwards midweek, bringing unsettled weather with stronger winds and rain from Thursday onwards. Rachel has the latest forecast ⬇️ pic.twitter.com/0yuU04h15V
— Met Office (@metoffice) May 2, 2023
They will receive a salute from the military in the palace gardens at 1.45pm, and then at about 2.15pm they will be joined by members of the royal family on the palace balcony to watch the flypast.
Ms Maxey said: “At the moment it looks like, as I say, the morning should be relatively dry with some sunny spells in London, but the afternoon could see showers developing in London.
“But long lead time, so as always the message is to keep an eye on the forecast and check it regularly because the detail will become clearer as we get nearer to the day.”
The BBC has predicted a similar outlook with the wettest part of the day set to be between 1pm and 5pm. Meanwhile, it is expected to be warm and humid with temperatures reaching as high as 17C.
“We could certainly see temperatures, high teens, for London, and mid to high teens for elsewhere in the country as well,” Ms Maxey said.
“Whether you feel warm or not will depend on whether you get a break in the cloud and a spell of sunshine.
“In which case it’s going to feel great, but under a shower it might not feel as nice,” she added.
