Seoul is experiencing an unusually prolonged heatwave with 14 consecutive nights of “tropical nights,” defined as temperatures remaining above 25 degrees Celsius. South Korea’s weather agency reports this is the highest number of such nights recorded since observations began in 1973, with an average of 12.1 across the country so far this summer. Several cities approached "super tropical night" status – exceeding 30 degrees Celsius – including Sokcho on Jeju Island reaching 29 degrees Celsius. The early onset of these warm nights – the first occurred May 19th, nearly 20 days earlier than the previous year – and the increasing frequency highlights a growing trend linked to climate change. The average number of tropical nights annually has dramatically increased from 4.1 between 1973-1982 to 12 already this summer, with the season still ongoing.