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Hundreds of thousands of us will be lining London’s streets this weekend as the marathon makes its way through town. No matter where you’re planning on watching from along the 26.2 mile route, you’re going to want to be warm and dry – but is the weather going to fall in line?
2020’s marathon day was infamously soggy, with torrential rain dogging runners who chose to do the route in London for the entire race. 2018 holds the record for the hottest marathon day so far, when temperatures reached 24.1 degrees.
Could Sunday bring any surprises? We’ve rounded up all the predictions for race day’s forecast, so you can rest easy and let the runners do all the hard work.
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The weather forecast for the 2025 London Marathon
It looks like the big day will be a bit windy, with the BBC predicting light winds to peak at about 3pm. Race-time temperatures are likely to climb from 12 degrees at 9am, when the elite runners will be limbering up on the start line, to a pleasant (if not actually quite hot) 20 degrees between 3pm and 6pm – the ideal time for pints in a packed pub garden to celebrate a race well run.
There’s no rain predicted for Sunday according to the BBC, which is excellent news for runners and spectators alike, but it’ll probably be quite cloudy, with sunny intervals. The Met Office puts the chance of precipitation at 10 percent between 1pm and 4pm, but don’t let such low odds put a dampener on your plans.
TLDR: you’ll probably be alright in a light jacket, or a classic bib and shorts combo if you’re running. Wildly impractical costumes are also great, if that’s your vibe.
Here's our round up of everything London Marathon.
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