The UK has experienced its hottest day of the year so far, with temperatures rising to 30.8°C in the Surrey village of Risley, surpassing the earlier 2025 record of 29.4°C recorded in Santon Downham, Suffolk. Forecasters have warned that temperatures could climb even higher, potentially reaching 32°C on the same day and possibly peaking at 34°C in the coming days. This scorching heat has prompted the UK Health Security Agency (UKHSA) to issue an amber heat-health alert across all parts of England, effective from noon on Thursday until 9 am on Monday, warning of a likely increase in heat-related deaths during this period.

The heatwave’s impact extends beyond rising temperatures. London has already witnessed two wildfires breaking out on green spaces within hours. Firefighters were dispatched to a two-acre blaze on shrubland and trees in Rainham, followed shortly by a fire affecting around six hectares of grassland on Upminster Road North. London Fire Brigade Assistant Commissioner Pat Goulbourne emphasised the heightened risk, citing temperatures exceeding 30°C alongside the driest spring in over a century. He urged the public to do their part in preventing grass fires, noting the close proximity of vulnerable open spaces to homes and livelihoods.

In response to these increasing wildfire threats, the London Fire Brigade (LFB) has been stepping up its preparedness efforts. Traditionally focusing on property fires, the brigade has expanded its capabilities to tackle wildfires more effectively, reflecting broader concerns about the escalating risks posed by climate change and prolonged dry conditions. LFB has invested in specialized equipment such as off-road wildfire response vehicles and tools including beaters, backpack blowers, and “holey hoses” designed for fire suppression in challenging terrains. Around 30 station commanders have completed specialist wildfire training, and all firefighters now undergo enhanced training tailored to the urban-rural interface. This training includes international collaborations with firefighters from regions prone to wildfires, such as Catalonia and Northumberland, to exchange expertise and tactics.

Despite the current heatwave, the UK is also bracing for other weather disruptions. While the amber heat-health alert covers all of England, parts of the country, including the North East and North West, have been under a yellow heat alert. Beyond the heat, the Met Office has issued a yellow alert for thunderstorms across large parts of England and Wales later in the week, signalling a potentially volatile weather pattern following the intense heat.

The official definition of a heatwave in the UK depends on sustained high temperatures over three consecutive days, with thresholds varying regionally from 25°C to 28°C. This summer’s early heat extremes, combined with the dry conditions that have contributed to wildfire risks, highlight the growing challenges posed by climate change to the UK’s weather patterns and public safety.

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Source: Noah Wire Services