Meteorological agency warns of hazardous weather conditions in Jeju and southern coastal areas
Category: Health
As South Korea braces for severe weather, the Korea Meteorological Administration (KMA) has issued warnings of heavy rain and strong winds across various regions, particularly in Jeju and the southern coastal areas. The forecast, updated on September 18, 2026, indicates that the weather will pose risks, urging residents to take necessary precautions.
On September 18, 2026, the KMA reported that rain would predominantly affect the eastern coast of Gangwon, the mountainous regions, and the southern provinces of Jeolla and Gyeongsang, including Jeju Island. The rain is expected to continue until the morning of September 19, particularly in the eastern parts of Gangwon and the mountainous areas of Jeju. Notably, Jeju Island is predicted to experience heavy rainfall throughout the day.
The KMA forecasts that strong winds will accompany the rain, particularly along the southern coast and in Jeju. Wind gusts are expected to exceed 70 km/h (about 43 mph) in certain areas, which could lead to hazardous conditions. The agency has also warned of high waves, with sea conditions becoming particularly dangerous, especially for vessels operating in the affected waters.
The anticipated weather conditions are not just a matter of inconvenience; they pose serious risks to safety and infrastructure. Residents in Jeju and the surrounding regions are advised to stay updated on weather advisories and exercise caution, particularly when traveling. The KMA has highlighted that heavy rainfall could lead to flash floods, landslides, and other weather-related hazards. In fact, the expected rainfall in Jeju could reach between 10 to 50 mm, with some areas possibly exceeding 80 mm.
As the weather develops, the KMA will continue to monitor conditions closely and provide updates. Residents should remain vigilant, especially in areas prone to flooding or landslides. The agency emphasizes the importance of following safety guidelines, such as avoiding low-lying areas and being cautious of rapidly rising water levels.
As of September 18, 2026, the weather across Busan, Ulsan, and Gyeongnam is characterized by overcast skies with intermittent rain. At 9 AM, temperatures were recorded at 22.1 degrees Celsius in Busan, 21.1 degrees in Ulsan, and 20 degrees in Changwon. The expected high for the day in Busan and Ulsan is 25 degrees, with Gyeongnam reaching around 24 to 25 degrees. Notably, the air quality is reported to be at a 'good' level, indicating favorable conditions for outdoor activities.
The KMA has issued several public safety advisories in light of the expected weather conditions. Drivers in rain-affected areas are urged to maintain safe distances and reduce speed due to decreased visibility and slippery roads. The agency has stated, "In areas experiencing rain, visibility may be reduced, and roads may become slippery, so we ask drivers to exercise caution and drive at reduced speeds." This is particularly pertinent as the rain is expected to continue throughout the day, especially in Busan and Ulsan, where it may persist into the evening.
Looking ahead, the weather is expected to stabilize after September 19, with clearer skies predicted for most of the country. On September 20, the lowest morning temperatures are forecasted to range between 14 to 20 degrees Celsius, with daytime highs reaching 24 to 30 degrees. The KMA anticipates that the weather will improve significantly, providing a respite from the current conditions.
As heavy rain and strong winds are set to impact large portions of the southern regions, the KMA emphasizes the need for residents to remain informed through official channels. They have advised people to avoid unnecessary outdoor activities, especially near rivers and coastal areas, where sudden changes in weather could lead to dangerous situations.