London's scorching heatwave is showing no signs of letting up, with temperatures expected to remain above 28C for another week. This prolonged heatwave has been a stark contrast to the usual British summer weather, with the capital experiencing near-constant highs since July 5th. The Met Office's deputy chief meteorologist, David Hayter, attributes this to the high-pressure system that has dominated the region, stating that it will persist for at least another week. However, this heatwave will finally come to an end at the weekend, with temperatures dipping to a more manageable 24C on Sunday. Despite the impending relief, the heatwave has already made its mark on the UK's climate history. 2026 has become the first year on record to reach 35C in May, June, and July, according to the Met Office. This is a significant milestone, as it surpasses the previous record set in 1976. The prolonged heatwave has also been accompanied by unusually high humidity, making the conditions particularly uncomfortable. The high humidity, combined with the heat, has led to record-breaking overnight temperatures, which are typically cooler. This unusual weather pattern has been a stark contrast to the UK's typical summer climate, with mean temperatures in England currently 2.4C above the average 21C. The impact of this heatwave extends beyond London, with Wales also experiencing temperatures 2.2C above the average 19.3C. Scotland and Northern Ireland, while closer to their seasonal norms, are still running above average at 0.9C and 1.3C, respectively. The Met Office's science manager, Amy Doherty, highlights the remarkable nature of this summer's weather. She notes that 2026 has already delivered more days above 30C than the entire year of 1976, and the warmth has not been limited to the daytime. The overnight temperatures have been tracking at record levels for this stage of the season, further emphasizing the unusual nature of this summer. The prolonged heatwave has also raised concerns about the UK's heatwave criteria, with dry soils providing less resistance to daytime heating. This could challenge the heatwave criteria into the second half of the summer, as the UK has already experienced three significant heatwaves this year. The question now is whether a new heatwave will emerge in London, defined by three consecutive days of temperatures above 28C. As Britons cope with this sweltering summer, the heatwave's impact on the environment and society remains a topic of concern and interest.
