Busan and surrounding areas experienced an extreme heatwave this week with temperatures exceeding 38°C [1] for two consecutive days.
The event is described as the worst in 122 years [1]. This unprecedented spike in temperature threatens public health and infrastructure in one of South Korea's most populous coastal regions.
In the nearby Yangsan basin, temperatures climbed even higher, exceeding 40°C [2]. Meteorological data indicates that the basin's specific topography amplified the heat, contributing to the extreme readings.
Experts said the weather patterns were due to a strong high-pressure system that trapped heat over the city. Additionally, humid Namhae winds, which typically provide cooling relief, turned into warm airflow.
"The heatwave that hit Busan for the first time in 122 years continued for a second day, with temperatures exceeding 38 degrees, leading to record-breaking heat," a YTN anchor said [1].
The combination of the high-pressure system and the geographic layout of the region created a stifling environment. The usual coastal breeze failed to mitigate the rising temperatures.
"Even the sea breeze could not cool the heat, and the entire city heated up like a giant cauldron," reporter Jung Hye-yoon said [1].
“The heatwave that hit Busan for the first time in 122 years continued for a second day”
The failure of the 'natural air conditioning' provided by Namhae sea breezes suggests a shift in how coastal urban centers in South Korea may experience extreme heat. When high-pressure systems override local maritime cooling effects, cities like Busan become vulnerable to the same 'heat island' extremes typically seen in inland basins, potentially requiring a reassessment of urban cooling infrastructure.
