Why Does UK Heat Feel So Much Worse? Expert Explains

Britain is experiencing a heatwave, with temperatures potentially reaching 35C. While some may dismiss complaints about the heat, a health professional offers insights into why hot weather can feel particularly intense in the UK.

Dr. Karan Rajan, an NHS surgeon, addressed this on his social media channel. He explained that the perception of heat in the UK being more intense than in other places is not solely due to British complaints. A significant factor is humidity.

The relative humidity, or the amount of moisture in the air compared to the maximum the air can hold at that temperature, is often higher in the UK. This makes it harder for the body to cool down through sweat evaporation, leading to a feeling of stickiness and increased heat. This is why a temperature of 35 degrees Celsius in a dry climate might feel more comfortable than 25 degrees Celsius in a humid environment.

Furthermore, the construction of British homes contributes to the problem. Buildings in the UK are typically designed to retain heat, which is beneficial during the colder months. However, this same insulation can trap heat during the summer, creating a greenhouse effect, especially in the absence of air conditioning, which is uncommon in many UK homes. In contrast, buildings in warmer climates are often designed to stay cool, with features like thick walls, large windows, and heat-deflecting coatings.