The biggest culprit is humidity. The UK is an island, surrounded by relatively warm seas, which means our air is often thick with moisture. When the temperature rises, that moisture doesn’t evaporate from your skin as efficiently, leaving you feeling like you’re wrapped in a damp towel.
Compare that to a Mediterranean or desert climate, where the air is dry. In Spain, sweat evaporates quickly, cooling you down naturally. Here? Your body’s built-in cooling system basically throws in the towel. Your sweat just sits there, mocking you.
Fun Fact: The UK’s average relative humidity in summer hovers around 70-80%. That’s on par with a tropical rainforest—minus the monkeys and the cool waterfalls.
