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Europe April 25, 2026

LONDON MARATHON: SUN'S OUT, RECORDS WILL FALL!

LONDON MARATHON: SUN'S OUT, RECORDS WILL FALL!

Tomorrow’s London Marathon promises more than just a grueling 26.2-mile test of endurance; it offers runners and spectators a welcome embrace of sunshine. After a week of brisk, sunny days coinciding with disruptions on the London Underground, the weather is finally shifting towards a gentler warmth – perfectly timed for the iconic race.

Thousands are converging on the capital, ready to tackle the course that winds through London’s most celebrated landmarks, culminating in a triumphant finish near Buckingham Palace. And for those preparing to push their limits, the forecast is exceptionally encouraging. The Met Office predicts near-ideal running conditions, a rare gift for such a demanding event.

Expect a bright start, with mostly sunshine greeting the elite wheelchair racers as they begin their journey around 8:50 am. As the main field sets off from Greenwich Park at 9:30 am, temperatures will be climbing, reaching a comfortable 13°C. The afternoon could see highs of 19°C, though a touch of cloud cover is anticipated later in the day.

Runners in action during the London Marathon 2025 edition.

Despite the pleasant warmth, runners should be mindful of the sun. The Met Office advises using sunscreen, as UV levels will be moderate during midday. A gentle east-to-west breeze will also be present, a fortunate circumstance as it largely aligns with the race route, offering minimal resistance to the athletes.

However, for those susceptible to seasonal allergies, a note of caution: oak pollen levels are expected to be high on Sunday. Hayfever sufferers should prepare accordingly to fully enjoy the spectacle.

Looking beyond the marathon, London can anticipate a continuation of the warm, sunny spell next week. Currently, no rain is forecast for the capital, though showers are expected in northern and eastern regions on Monday, potentially becoming heavy at times. A strengthening easterly wind is also predicted in the south during the middle of the week.

Metro weather forecast map showing temperatures in the UK and London on Sunday, April 26

The warmth isn’t universally welcomed, however. In Northamptonshire, a unique and beloved tradition – the ‘World Puddle Jumping Championships’ – is facing a potential washout… of a different kind. The mini-heatwave threatens to eliminate the very element essential to the competition: puddles.

Organizers, determined to keep the quirky event alive, have made a historic decision. For the first time in thirteen years, competitors will be permitted to jump into paddling pools instead. This adaptation ensures that hundreds of children, and even participants from as far afield as Australia, can continue to pursue the coveted title of World Puddle Jumping Champion.

The competition, which has even garnered support from within the House of Commons, relies on video submissions this week, with the winner to be announced at the end of next week. It’s a testament to the enduring spirit of fun and ingenuity, even in the face of unexpectedly sunny skies.

The masses crossing Tower Bridge during the TCS London Marathon. Picture date: Sunday April 27, 2025.

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