The UK is bracing for another intense heatwave, with several amber health alerts now in effect. Following the May hot spell, this incoming heatwave could prove even more unbearable, according to forecasters.
Met Office Warning
The Met Office has cautioned that the upcoming heatwave will bring 'humid and muggy' conditions to parts of England. Temperatures are expected to exceed 30°C in some southern areas, prompting the UK Health Security Agency to issue amber heat health alerts.
These warnings cover London, the South East, South West, and East of England, and are active from today until 8pm on Tuesday.
What Does the Heat Health Alert Mean?
The health watchdog stated that health and social care services could face increased pressure, potentially leading to a rise in deaths. People aged 65 and over, as well as those with pre-existing health conditions, are most vulnerable. However, younger age groups may also be affected as conditions become sweltering.
Temperatures will be well above average, pushing into the mid-30s (°C) by Monday. The Met Office added that it will become very humid and muggy, especially in the south during both day and night, making it feel even hotter than the May heatwave.
Less severe yellow health alerts cover the East and West Midlands, warning of minor impacts on services.
Heatwave Weather Forecast
London will see temperatures rise above 30°C almost every day over the next week. Additionally, tropical nights are expected, with temperatures rarely dropping below 20°C even at night, leading to restless sleep.
Met Office meteorologist Honor Criswick explained: 'It's a bit different to the last heatwave, because last time the humidity wasn't as high, whereas this time the humidity is quite a bit higher. It's just going to make it feel that bit muggier and more humid during the day and overnight as well, so it means the heat itself will be more uncomfortable.'
She added: 'Because the humidity is so high, there's a chance that this could potentially spark off some thunderstorms. It's always tricky with thunderstorms, as they could pop up pretty much anywhere, particularly across central, southern, and south-east parts of England. But wherever they do hit, it's probably going to be quite an intense, heavy downpour with rumbles of thunder and lightning, but exactly where they'll be is hard to forecast at the moment.'
Travel Disruption
Beyond health concerns, the heat can cause significant travel disruption, especially on railways. Rails can melt and bend in extreme heat, leading to speed restrictions on some sections. This could result in delays and cancellations, National Rail warned.
Passengers on rail services and the London Underground are advised to carry water, and some larger train stations offer free refill points. On roads, drivers should avoid the hottest part of the day and travel early in the morning if possible.
Lee Morley, AA patrol specialist, shared essential tips: 'Before leaving, take a few minutes to check your tyres, coolant, and oil, and ensure you have enough fuel or charge to keep your air conditioning running if traffic is heavy. Carry plenty of water—ideally at least one litre per person—and pack as though you could be delayed. Snacks, sun cream, medication, a first aid kit, mobile phone chargers, the AA app, and what3words can all make a real difference if you break down or get caught in long queues. A parked car can become dangerously hot in minutes, so never leave children, older or vulnerable passengers, or pets inside a vehicle, even briefly. If you do break down, stop somewhere safe, keep well away from moving traffic, and wait in the shade while help is on the way.'
