South Korea will experience continued early-summer heat this week, with heavy showers expected across inland regions on Monday, June 5 [1].
The weather shift coincides with the solar term 'Haji,' marking the start of summer. This transition brings increased moisture and cloud cover, creating a volatile mix of high temperatures and sudden precipitation that can disrupt travel and agriculture.
Weather caster Lee Hye-min said Seoul's daytime temperature reached 28.1°C today [1]. Southern regions are projected to see daytime temperatures around 30°C [4].
Rainfall is expected to be concentrated in specific zones tomorrow. Jeju Island is forecast to receive between 20 and 60 mm of rain [2], while inland regions are expected to see between five and 30 mm [3].
Lee said the heat has returned as the country enters the summer season. The Korea Meteorological Administration indicates that atmospheric conditions are currently driving the surge in temperature and moisture.
While some reports suggest a potential pause in the heat wave due to cooler air aloft, other forecasts maintain that temperatures around 30°C will persist throughout the week [5]. Residents in inland areas are advised to prepare for sudden, heavy showers on Monday [1].
“Seoul's daytime temperature reached 28.1°C today.”
The convergence of the 'Haji' solar term with high moisture levels indicates a rapid transition into the humid summer monsoon patterns typical of the Korean peninsula. The discrepancy between forecasts regarding a potential 'pause' in the heat wave suggests atmospheric instability, which often precedes the more consistent heavy rains of the official rainy season.


