Weather Forecast: Continued Rain Across the Country with Heat in the South and Jeju

By Lee da hui Posted : July 21, 2026, 18:12 Updated : July 21, 2026, 18:12

On Wednesday, July 22, monsoon rains are expected to continue across most of the country. Strong rain accompanied by gusty winds and thunderstorms will primarily affect the central region, while the southern areas and Jeju Island will experience daytime highs reaching up to 37 degrees Celsius.


According to the Korea Meteorological Administration on July 21, Seoul, Incheon, Gyeonggi Province, and the inland and mountainous areas of Gangwon will see rainfall between 20 to 60mm. The five islands in the Yellow Sea are expected to receive 5 to 20mm, while the eastern coast of Gangwon will also see 5 to 20mm of rain.


In North Jeolla Province, rainfall will range from 5 to 40mm, while Gwangju and South Jeolla Province will see 5 to 30mm. Northern inland areas of North Gyeongsang Province are expected to receive 20 to 60mm of rain. Daegu, northern Gyeongsang, and western inland areas of South Gyeongsang will see 5 to 40mm, and Jeju Island is expected to receive around 5mm.


While rain will continue in most regions, many areas in the southern part of the country will experience a lull in precipitation. The capital region may also see a brief pause in rain until early morning.


Following recent heavy rainfall, strong rain is also expected in North Korea, which may lead to rising water levels and increased flow rates in rivers and streams such as the Imjin, Han, and Bukhan rivers in northern Gyeonggi and northern Gangwon provinces.


Valleys and rivers may experience sudden surges in water levels, and there is a risk of isolation in riverside walking paths and underpasses. Residents should be cautious of flooding in low-lying areas, river overflow, landslides, rockfalls, and the inundation of agricultural land.


The morning low temperatures are forecasted to be between 22 to 26 degrees Celsius, with daytime highs ranging from 29 to 37 degrees. Overall, the country is expected to be mostly cloudy.


The southern regions and Jeju Island will experience heat, with heat advisories in effect for parts of the Chungcheong region, southern areas, and Jeju. The perceived temperature in most regions is expected to rise around 31 degrees.





* This article has been translated by AI.

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