South Korea will experience a mix of cool mornings and hot midday temperatures with rain expected along the east coast this Thursday [1, 2].
These fluctuating conditions are critical for residents managing health during extreme temperature swings and for farmers facing drought in the southern regions [1].
The Korea Meteorological Administration said that moisture and east-winds from the weakened Typhoon Chan-hom, which is currently passing Japan, are driving the current weather patterns [1]. This moisture is combining with a high-pressure ridge that brings strong midday sun to the peninsula [1].
In Seoul, the morning temperature was recorded at 22.1 °C [2], but the midday high is forecast to reach 33 °C [2]. Other cities will see similar spikes, with Gwangju and Daegu expected to reach 34 °C [2]. Sokcho is forecast to be cooler at 26 °C [2].
Rain is expected to provide some relief to areas struggling with dry conditions. The Korea Meteorological Administration said, "As the drought in the southern region worsens, rain will fall on the east coast and some inland areas of Gyeongnam tomorrow (13th)" [1].
Forecasters expect maximum rainfall of up to 50 mm on the east coast and parts of Gyeongsangnam-do [1]. Additionally, the southern Chungcheong region is expected to see showers ranging from five to 40 mm [1].
A YTN weather reporter said that the air has become cool enough in the mornings to feel like an early arrival of autumn [1]. However, the intense midday heat remains a primary concern for urban centers including Seoul, Daejeon, Jeonju, and Gyeonggi [2].
“Seoul is forecast to reach a midday high of 33 °C.”
The interaction between a weakened typhoon and a high-pressure ridge creates a volatile weather window. While the forecasted rainfall may mitigate severe drought in the southern provinces, the wide temperature gap between morning and afternoon increases the risk of heat-related illness for the general population.
