Seoul is under a heat-wave advisory following a period of persistently high temperatures and humidity [3].

The weather alerts signal a dangerous combination of heat and moisture that has created tropical-night conditions across the metropolitan area. These conditions increase the risk of heat-related illness for residents and strain urban infrastructure.

A separate heat-wave advisory was issued on Aug. 23 [3]. This alert follows a pattern of extreme weather in the region, occurring 15 days after the last warning [1]. The current advisory was triggered because the maximum perceived temperature reached 33 °C or higher for two or more consecutive days [3].

Earlier this month, a severe heat-wave warning remained in effect on Friday, Aug. 7 [2]. While the region has faced a prolonged summer, some relief arrived recently, with the latest tropical-night conditions appearing for the first time in nine days [1].

Weather forecasts indicate a shift in conditions for some regions tomorrow, Aug. 30 [1]. Showers are expected to move through eastern Gyeonggi-do and Gangwon-do provinces. These precipitation patterns may provide a temporary reprieve from the sweltering weather that has gripped the Seoul metropolitan area and surrounding regions [1], [2].

Local authorities continue to monitor the perceived temperature thresholds to determine if warnings should be escalated. The intersection of high humidity and heat often makes the air feel warmer than the actual thermometer reading, a factor that drives the current advisory levels [3].

Seoul is under a heat-wave advisory following a period of persistently high temperatures and humidity.

The recurrence of heat-wave advisories in late August suggests a prolonged summer season in South Korea. By relying on perceived temperature—which accounts for humidity—rather than just raw degrees, meteorologists are highlighting the increased physiological stress on the human body during tropical-night conditions.