![[Weather] Heavy rain in the southern region on Sunday… More than 200 mm in three days in Jeju mountainous area](/api/img?u=https%3A%2F%2Fimg.yna.co.kr%2Fphoto%2Fyna%2FYH%2F2026%2F10%2F24%2FPYH2026102402700005600_P2.jpg&w=1200&q=72&f=webp)
Heavy rain of around 20 mm per hour on the southern coast and Jeju Island... The temperature difference between day and night is around 15 degrees.
AI-generated summary
National weather outlook report for the weekend based on the Korea Meteorological Administration forecast.
(Seoul = Yonhap News) Reporter Jeong Ji-su = Sunday, the 25th, was mostly cloudy across the country, with heavy rain forecast in the southern region and Jeju Island.
It will rain in the Chungcheong region in the early morning and afternoon, and in the east coast and mountainous areas of Gangwon from the afternoon, rain will gradually stop in the evening.
Heavy, heavy rain of around 20 mm per hour will fall on the southern coast and Jeju Island. Due to the influence of the typhoon, there will be waves and swells at sea.
The expected precipitation for three days from the 24th to the 26th is 20-60 mm in Gwangju and Jeonnam (80 mm or more in many places on the south coast of Jeonnam), 30-80 mm in Busan, Ulsan, and the south coast of Gyeongnam (100 mm or more in many places in the south coast of Gyeongnam), 80-150 mm in Jeju Island (200 mm or more in many places in mountainous and mid-mountainous areas), It is 20 to 60 mm inland in Gyeongnam.
For the two days of the 24th and 25th, around 5 mm is expected in Daejeon, Sejong, South Chungcheong Province, and North Chungcheong Province, 5 to 30 mm in southeastern Jeonbuk, 5 to 10 mm in Jeonbuk (excluding southeastern part), 10 to 50 mm in Daegu and southern Gyeongbuk, and 5 to 40 mm in central and northern Gyeongbuk.
On the east coast and mountainous areas of Gangwon, 5 to 10 mm of rain will fall for two days on the 25th and 26th.
Starting at night, strong winds with an instantaneous wind speed of around 55 km/h will blow across most of the country, so be careful to avoid accidents.
The metropolitan area and inland Gangwon will be mostly clear from morning to afternoon.
The lowest morning temperature is forecast to be 8 to 18 degrees, and the highest daytime temperature is forecast to be 19 to 24 degrees.
The temperature difference between day and night will be very large, around 15 degrees, especially in the metropolitan area and inland Gangwon, so you should take care of your health.
Fine dust concentration is expected to be ‘good’ across the country.
The sea waves will be 0.5 to 2.5 m in the East Sea and South Sea, and 0.5 to 1.5 m in the West Sea.
The wave height of the deep inner sea (the sea within about 200 km of the coastline) is expected to be 0.5 to 4.0 m in the East Sea, 0.5 to 4.5 m in the West Sea, and 1.5 to 5.0 m in the South Sea.
Below is the regional weather forecast for the 25th.
[morning, afternoon] (lowest to highest temperature) <probability of precipitation in the morning and afternoon>
▲ Seoul: [Clear, many clouds] (11~24) <10, 20>
▲ Incheon: [Clear, many clouds] (11∼24) <0, 20>
▲ Suwon: [A lot of clouds, a lot of clouds] (12~24) <20, 20>
▲ Chuncheon: [Clear, Cloudy] (10∼23) <0, 30>
▲ Gangneung: [Lots of clouds, cloudy and rain] (15~19) <20, 80>
▲ Cheongju: [Cloudy, Cloudy] (15∼22) <30, 30>
▲ Daejeon: [Cloudy and sometimes rain, cloudy and sometimes rain] (14~21) <60, 60>
▲ Sejong: [Cloudy, cloudy] (14∼21) <30, 30>
▲ Jeonju: [Cloudy and rainy at times, cloudy and rainy at times] (15-21) <60, 60>
▲ Gwangju: [Cloudy and occasionally rainy, cloudy and occasionally rainy] (16∼21) <60, 60>
▲ Daegu: [Cloudy and sometimes rain, cloudy and sometimes rain] (16∼21) <60, 60>
▲ Busan: [Cloudy and rain, cloudy and rain] (18~21) <70, 70>
▲ Ulsan: [Cloudy and rain, cloudy and rain] (17∼20) <80, 70>
▲ Changwon: [Cloudy and rain, cloudy and rain] (17~21) <80, 70>
▲ Jeju: [Cloudy and rain, cloudy and rain] (20~22) <70, 70>

While Typhoon No. 30 'Champi' was moving north, heavy rain and strong winds fell on Jeju Island for two days, causing flooding damage, flight cancellations and delays, and passenger ship restrictions. Additional rain of 80 to 150 mm was forecast until the day after tomorrow morning.

The Ministry of Public Administration and Security raised the storm and flood disaster crisis warning for Jeju and the southern coastal region to 'caution' and dispatched an on-site situation management officer as Typhoon No. 30 'Champi' moved north.
![[Weather] Strong rain in the southern part of Jeju on Saturday… Beware of strong winds and swells](/api/img?u=https%3A%2F%2Fimg.yna.co.kr%2Fphoto%2Fyna%2FYH%2F2026%2F10%2F18%2FPYH2026101806420001300_P2.jpg&w=320&q=72&f=webp)
On the 24th, the entire country will be mostly cloudy, with heavy rain expected to fall mainly in the southern region and Jeju Island. Heavy rain of 20 to 30 mm per hour is expected on the southern coast and Jeju Island, and caution is required due to high waves caused by coastal swells.

As of 8 p.m. on the 23rd, the Korea Meteorological Administration announced that a strong wind advisory was in effect for the Jeju Island mountainous region, Seogwipo City, and some areas of Jeju City, and that a heavy rain advisory was maintained for the Jeju Island mountainous region, the mid-mountainous area of Seogwipo City, and the southern part of Seogwipo City.

Heavy rain, strong winds, and swell waves are expected throughout the weekend due to the influence of Typhoon No. 30 'Champi' in Jeju and the southern region. Heavy rain of up to 250 mm or more is expected to fall in mountainous areas of Jeju.

On the afternoon of the 23rd, the Korea Meteorological Administration announced that a heavy rain advisory was in effect for the mountainous areas of Jeju Island and the Seogwipo city area, and that a wind advisory was maintained for all waters off Jeju Island.