Southern South Korea recorded record late-August temperatures this week, with meteorologists warning of heavy rainfall arriving tomorrow [1].

The extreme weather shift poses a risk to regions already weakened by recent downpours. A combination of lingering heat and an approaching weather system could trigger additional flooding and infrastructure damage in vulnerable coastal areas [1].

Weather forecasters from the Korea Meteorological Administration said that several southern cities reached peak temperatures for the late-August period [1]. Milyang reached 37.4 °C [1], while Goheung recorded 36.1 °C [1]. These temperatures have contributed to "tropical night" conditions, where overnight lows remain high, across various southern regions [1].

In the capital, the heat remained palpable even after sunset. Jeong Su-hyun of YTN News said the felt temperature in Seoul remained around 30 °C [1].

While the heat persists tonight, the focus is shifting toward the southern coast. Forecasters said more than 80 mm of total rainfall is expected tomorrow [1]. This precipitation is expected to fall at an hourly rate of approximately 20 mm [1].

Local authorities are monitoring the situation closely as the weather system moves in. The transition from extreme heat to heavy rain often complicates emergency management, particularly in areas where the ground is already saturated from previous storms [1].

Milyang reached 37.4 °C, while Goheung recorded 36.1 °C.

The rapid oscillation between record-breaking heat and intense rainfall indicates an unstable atmospheric pattern. For South Korea, this sequence increases the risk of flash flooding, as heat-stressed soil and existing moisture from previous rains reduce the land's capacity to absorb sudden, heavy precipitation.