UK will be even hotter today: Temperatures could hit 45C as amber health alert is extended across England after sunseekers flocked to the coast as ‘killer’ heatwave gripped Britain

Britain is sweltering under what is being described as one of the most intense heatwaves in recent memory, and today, things are about to get even hotter. Meteorologists warn that temperatures across parts of England could soar to a staggering 35°C, pushing the country to its limits as the amber heat-health alert remains firmly in place. The warning, issued by the UK Health Security Agency in collaboration with the Met Office, covers the majority of England, including London, the South East, the Midlands, and parts of the East — regions already grappling with searing heat and mounting health concerns.

Over the weekend, tens of thousands of Britons rushed to the coasts, riversides, and open fields, desperate to soak up the sun or escape the suffocating conditions of inland cities. Beaches in Brighton, Bournemouth, and Cornwall were packed to capacity, as families laid out umbrellas and children splashed through the waves. But beneath the festive scenes, a more serious warning loomed. The heatwave — dubbed “killer” by some forecasters — is not just about sunburn and sweaty commutes. It’s about real, tangible danger.

As the mercury climbs, so do the risks. Officials have extended the amber health alert not merely for caution, but as a direct response to the heightened chances of heat-related illnesses, including dehydration, heat exhaustion, and even stroke. The warning isn’t just for the elderly or those with pre-existing conditions — although they are the most vulnerable — but for everyone. Authorities are urging people to stay indoors during the hottest part of the day, avoid strenuous activity, and keep themselves and others hydrated and cool. Overnight temperatures, too, have become a concern. Some regions are expected to experience what are known as “tropical nights,” where temperatures remain above 20°C even in the early hours, offering little relief or rest.

In London, concerns have also been raised about the risk of wildfires, particularly in dry parks and grasslands that have turned brittle under the unrelenting sun. The London Fire Brigade has advised the public to avoid barbecues and to report any suspicious smoke or flames immediately. Elsewhere, rail services across parts of the country have introduced speed restrictions, especially on exposed lines like those heading towards Brighton, as tracks face the risk of heat buckling.

Even iconic events have not escaped the reach of the heat. At Wimbledon, the start of the tournament has already gone down in history as one of the hottest ever, with court-side thermometers climbing close to 30°C and forecasted to rise even higher. Spectators and players alike have been spotted fanning themselves, seeking shade, and retreating indoors between matches as the air grows heavier by the hour.

What’s causing this unrelenting heat is a powerful “heat dome” — a high-pressure system that traps warm air in place, preventing clouds and cooler breezes from bringing relief. Meteorologists point to hot air masses sweeping north from southern Europe, particularly Spain and France, which have seen their own dangerous spikes in temperature in recent weeks. Combined with elevated sea temperatures off the southwest coast, the result is a trapped system that continues to intensify.

Climate scientists warn that this may not be a one-off event. With rising global temperatures and increasingly unpredictable weather patterns, these once-rare extreme heat events are becoming more common, more intense, and more dangerous. This current heatwave marks the second time in June alone that parts of England have seen temperatures soar past 32°C — a trend that could have long-term consequences on infrastructure, public health, and even agriculture.

Relief may be on the horizon. Forecasts suggest that slightly cooler and more unsettled weather could arrive by midweek, bringing lower temperatures and potential showers. But until then, the UK remains firmly in the grip of an unforgiving sun. For now, the message from authorities is simple: enjoy the sunshine — but treat it with the caution it demands.

As the nation braces for yet another scorcher, the heat serves as both a reminder and a warning. This is not just summer. This is a glimpse into the future.