Tue Sep 23 10:40:00 UTC 2025: ## National Rain Expected Through Thursday, with Heavy Downpours in Some Areas

**Seoul, South Korea – September 23, 2025** – A nationwide rain is expected to begin on Wednesday, September 24th and continue through Thursday, according to the Korea Meteorological Administration (KMA). Some regions are predicted to experience heavy downpours.

The rain, which began on Jeju Island, is expected to spread to the southern coast of Gyeongnam late tonight (September 23rd) and gradually expand to other regions by Wednesday. The KMA forecasts that rain will cease in Seoul, Incheon, northern Gyeonggi, and northern Gangwon by early Thursday morning. Gyeonggi’s southern region and central/southern Gangwon will see the rain stop by Thursday morning, while the Chungcheong and southern regions, including Jeju Island, will experience the rain clearing by Thursday night.

The KMA is warning of potential localized heavy rainfall, particularly in central regions between Wednesday afternoon and evening, with hourly rates of 20-30mm. The west coast of Chungnam, North Jeolla, and the northwest of South Jeolla are predicted to experience torrential rain, with hourly rates of 30-50mm, between early Thursday morning and Thursday morning. Residents in these areas are urged to take precautions.

Expected rainfall amounts through Thursday are:

* **West Sea Islands, West Coast of Chungnam, and Honam Region:** 30-80mm (potentially exceeding 100mm in West Sea Islands, North Inland Gangwon, West Coast of Chungnam, North Jeolla, and Northwest Jeolla)
* **Greater Seoul Metropolitan Area, Daejeon, Sejong, Inland Chungnam, Chungbuk, Busan, Ulsan, and Gyeongnam:** 20-60mm (potentially exceeding 80mm in the Greater Seoul Metropolitan Area and Inland Chungnam)
* **Jeju Island:** 10-60mm
* **Daegu, Gyeongbuk, Ulleungdo, and Dokdo:** 10-40mm
* **East Coast of Northern Gangwon:** 5-20mm
* **East Coast of Central and Southern Gangwon:** Around 5mm

The stationary front is expected to linger, bringing occasional rain to the southern regions and Jeju Island on Friday, September 26th, and potentially to Chungcheong and the western inland areas of Gyeongsang on Saturday, September 27th.

Despite the rain, temperatures are expected to remain relatively mild due to the influx of warm, humid air. The forecast for Wednesday’s low temperatures ranges from 16-23 degrees Celsius, while high temperatures are expected to range from 23-30 degrees Celsius.

Key cities are forecasting the following temperatures for Wednesday:

* **Seoul:** Low 20°C, High 24°C
* **Incheon:** Low 20°C, High 25°C
* **Daejeon:** Low 20°C, High 28°C
* **Gwangju:** Low 22°C, High 30°C
* **Daegu:** Low 19°C, High 28°C
* **Ulsan:** Low 20°C, High 27°C
* **Busan:** Low 23°C, High 28°C

Residents are advised to stay informed of the latest weather updates and take necessary precautions during periods of heavy rainfall.

Read More