Seoul recorded a daytime high of 33.2°C on June 15, 2024, marking the hottest day of the year so far [1].
The sudden spike in temperature signals an early onset of extreme summer weather, potentially straining urban infrastructure and public health systems as the city prepares for sustained heat.
Meteorologists said the intense heat was due to a combination of high solar radiation and humidity following recent showers [1]. This atmospheric mix created a stifling environment that persisted well into the evening. Night-time apparent temperatures reached nearly 25°C, creating conditions similar to tropical nights [1].
Local businesses reported a surge in demand for cooling products to combat the spike. Lee Sol-bi, a part-time worker at a beverage shop, said cold drinks with plenty of ice, such as smoothies and iced americanos, appeared to be selling in high volumes [2].
The heat was significant enough to trigger forecasts for the following day. Meteorologists said some regions could see the first official heat-wave warning of the season [1].
While some reports previously cited a yearly high of 32.1°C, updated data from YTN and MSN confirm the temperature peaked at 33.2°C [1]. The city remains under observation as the humidity continues to amplify the perceived heat across the metropolitan area.
“Seoul recorded a daytime high of 33.2°C on June 15, 2024, marking the hottest day of the year so far.”
The occurrence of such high temperatures in mid-June suggests an accelerating summer heat cycle in South Korea. When combined with high humidity, these conditions increase the risk of heat-related illnesses and place higher demand on the electrical grid for air conditioning, necessitating early activation of municipal heat-response protocols.
