A heat advisory has been issued for the entire city of Seoul, with scattered showers expected to arrive in the evening.

The alert comes as the capital faces a period of intense heat that could impact public health and urban infrastructure across the metropolitan area.

Weather officials said the advisory was issued because the maximum perceived temperature is expected to rise above 33 °C [2] for more than two consecutive days [2]. While the heat remains the primary concern, forecasters expect scattered showers to bring rainfall amounts between five and 40 millimeters [1].

The advisory extends beyond the city limits to parts of the surrounding capital area, including Gongju and Chungcheong Province [3]. This wide geographic coverage indicates a regional weather pattern rather than a localized urban heat island effect.

Reports on the timing of the alert vary. One report said a heat alert was issued for Seoul on the 18th [1], while another report said the advisory for the entire Seoul area was issued on the 29th [2].

Residents are encouraged to monitor weather updates as the scorching conditions persist. The combination of high humidity and extreme temperatures often increases the risk of heat-related illnesses for vulnerable populations, particularly the elderly and those working outdoors.

A heat advisory has been issued for the entire city of Seoul

The issuance of a city-wide advisory based on perceived temperature—which accounts for humidity—suggests that the heat index is reaching dangerous levels. The expected evening showers may provide temporary relief, but the persistence of temperatures above 33 °C for multiple days typically increases the strain on the city's power grid and public health services.