This Fall Will Be Hotter and Rainier Than Usual

The Korea Meteorological Administration (KMA) has forecasted that this autumn will be hotter and wetter than usual. The rise in sea surface temperatures also increases the likelihood of autumn typhoons.

On the first weekend of September, the temperature in Seoul briefly rose to 30 degrees on the 2nd, bringing a sudden heatwave, but the sky clearly shows autumn weather. Photo by Jo Yongjun jun21@

According to the KMA's three-month weather outlook on the 4th, the average temperature this autumn (September to November) is expected to be slightly higher or similar to the usual. The southern regions may experience significant temperature variations due to the development of autumn typhoons. Currently, the sea surface temperature over tropical seas is between 29 and 30 degrees Celsius, about 0.5 to 1 degree higher than average, creating favorable conditions for typhoon development. If a typhoon forms, hot and humid air will flow into the southern regions, raising temperatures and precipitation levels. Combined with El Ni?o, this could result in heavy rainfall mainly in the southern areas this autumn.

For now, the North Pacific High, which brought sweltering heat, is retreating southward, leading to somewhat cooler weather centered around the Seoul metropolitan area and central regions, the KMA forecasted. This is due to cold and dry air descending from the north, pushing the hot and humid air southward. On the 4th, the daytime high temperatures are forecasted to drop by 2 to 3 degrees compared to last week, with Seoul at 29°C, Incheon 28°C, Chuncheon 29°C, Gangneung 26°C, Daegu 30°C, Gwangju 32°C, Busan 30°C, and Jeju 30°C. Showers are expected across various parts of the country until the afternoon, which will help cool down the remaining heat. The Tibetan High and North Pacific High, which dominated the upper and lower atmosphere over Korea and caused the heatwave, are weakening, making the atmosphere unstable and forming rain clouds. These rain clouds are expected to bring showers of 5 to 40 mm nationwide.

The KMA also predicted that there will likely be large temperature differences between day and night throughout this week. Especially in the southern regions, daytime highs may exceed 32°C, resulting in significant temperature fluctuations between morning and evening.

This content was produced with the assistance of AI translation services.