Monsoon rains are expected to begin Sunday night in Seoul and spread across the south of Chungcheong-do provinces [1].
The onset of the seasonal monsoon period brings heavy precipitation to the Korean peninsula, posing potential risks for flooding and infrastructure damage in high-risk zones [1, 3].
Forecasters said the weekend will begin on a cloudy note tomorrow, with the first monsoon rains hitting the capital area on Sunday night [1]. Rainfall in Seoul is expected to range between five to 20 millimeters [1]. These rains will continue through the following night into Monday [1, 2].
Southern regions are under higher alert due to the intensity of the expected downpours. Heavy rains are forecast for the south of Chungcheong-do provinces, southern Jeollanam-do Province, and Jeju Island [1, 2].
Particular concern is centered on the mountainous areas of Jeju Island, where rainfall could exceed 150 millimeters [1]. Arirang News said the weekend would start with cloudy weather before the heavier systems move in [1].
Local authorities have issued alerts for the southern regions as the weather system develops [2]. The rain is arriving amid broader heatwave conditions affecting the region [3].
“Mountainous areas of Jeju Island could see more than 150 millimeters of rain.”
The arrival of the monsoon marks a critical seasonal transition in South Korea. While Seoul expects moderate rainfall, the extreme projections for Jeju Island and southern provinces highlight the geographic disparity in storm intensity, requiring targeted emergency preparedness in mountainous and coastal regions to prevent landslides and flash floods.
