In a continuation of this summer's extreme conditions, Britain is set to face its third official heat wave as temperatures are expected to rise significantly this weekend. Following a brief respite, the heat is making a strong return, with the Met Office forecasting highs of up to 31 degrees Celsius (approximately 88 degrees Fahrenheit) on Thursday, and 32 degrees Celsius (close to 90 degrees Fahrenheit) on Friday across parts of England and Wales.

Jason Kelly, a chief meteorologist at the United Kingdom's Met Office, explained that an official heat wave is deemed to occur when temperatures reach or surpass specific thresholds for three consecutive days. For the northern and western regions, including Scotland and Northern Ireland, that threshold is set at 25 degrees Celsius (77 degrees Fahrenheit), while in the vicinity of London, it is slightly higher at 28 degrees Celsius (82.4 degrees Fahrenheit).

In the days to come, a significant portion of England, along with eastern Scotland and eastern Northern Ireland, is likely to meet these heat wave conditions. Even areas that do not exceed their specific thresholds are anticipated to experience unusually high temperatures.

In light of the forecast, the U.K. Health Security Agency has issued yellow heat health alerts for all counties throughout England—indicative of the lowest warning level for health risks. The alerts come with a caution that there may be dire impacts on health and social care services, increasing the risk of heat-related health issues, particularly for older adults and other vulnerable groups within the population. As communities across the nation prepare for this extreme heat, it serves as a stark reminder of the ongoing challenges posed by climate change and the importance of public health awareness.