Seoul recorded a maximum daytime temperature of 35 °C on Saturday, marking the highest temperature of the summer so far [1].
The extreme heat indicates an intensifying summer season that has forced authorities to expand heat-wave warnings nationwide. This surge in temperature threatens public health and stresses urban infrastructure in one of Asia's most densely populated cities.
In addition to the daytime peak, Seoul experienced its first tropical night of the season [1]. This phenomenon occurs when nighttime temperatures remain at or above 25 °C, preventing the city from cooling down after sunset. Local officials responded by expanding the scope of tropical night advisories to protect residents [2].
The heat is not limited to the capital. In Gyeongbuk province, specifically in the cities of Pohang and Gyeongsan, authorities issued the first severe heat-wave warning for the region [1].
Meteorologists attribute the current conditions to a combination of three primary factors. Two hot high-pressure systems are currently positioned over the region, while humid air continues to flow north from the south [1]. Local topographic effects have further intensified the heat, trapping warm air in specific areas.
An anchor for YTN News said the atmospheric conditions are similar to covering oneself with two blankets while running a space heater [2]. The anchor said that southern Gyeongbuk is effectively facing a blast of hot air similar to a hair dryer [2].
The combination of high humidity and extreme heat increases the risk of heatstroke and other heat-related illnesses. The government continues to monitor the movement of the high-pressure systems to determine how long these peak temperatures will persist across the peninsula [1].
“Seoul recorded a maximum daytime temperature of 35 °C, marking the highest temperature of the summer so far.”
The convergence of multiple high-pressure systems and humid southerly airflow creates a 'heat dome' effect, which prevents nighttime cooling and amplifies daytime peaks. The issuance of a first-ever severe heat-wave warning in parts of Gyeongbuk suggests that traditional weather patterns are shifting, potentially leading to more frequent and intense extreme heat events in South Korea.
