Early Summer Heatwave Hits South Korea, Rain Expected Tonight in Capital Region

South Korea is bracing for a mixed bag of weather on Monday, April 27th, 2026. While many regions will experience a warm, almost early-summer feel with daytime highs reaching up to 27 degrees Celsius, the nation's weather service, the Korea Meteorological Administration (KMA), has issued advisories for dry conditions in central and some southeastern areas.

From a local perspective, the dry spell in areas like the Seoul metropolitan region, northern Jeonbuk, and Gyeongbuk is a significant concern. Fire warnings are in effect, urging residents to exercise extreme caution with any open flames, especially in areas adjacent to forests. The risk of wildfires is heightened, and authorities are emphasizing the need for strict management of flammable materials. This focus on fire prevention is a recurring theme during dry periods in Korea, given the mountainous terrain and the cultural practice of outdoor activities.

However, relief is on the horizon for some. Starting Monday night, the KMA forecasts the onset of rain in the Seoul metropolitan area, inland Gangwon, and northern Chungnam. While the precipitation is not expected to be heavy, ranging from 5 to 10mm in the capital region and up to 20mm in Gangwon, it will bring some respite from the dryness. The KMA also warns of potential thunderstorms and strong gusts in these areas, advising citizens to be prepared for sudden weather changes and ensure the safety of their property.

The temperature fluctuations are also noteworthy. While some inland areas like Daegu are expected to reach a high of 27 degrees Celsius, coastal cities like Gangneung will be considerably cooler at 16 degrees. This variation is typical for the Korean peninsula, influenced by proximity to the sea and regional topography. Overall, the forecast presents a dynamic weather pattern, requiring attention to both the warmth and the potential for localized heavy rain and dry conditions.