![[Weather] Monday cloudy nationwide and rainy in Jeju… Beware of strong winds and swells](/api/img?u=https%3A%2F%2Fimg.yna.co.kr%2Fphoto%2Fyna%2FYH%2F2026%2F10%2F25%2FPYH2026102508270005200_P2.jpg&w=1200&q=72&f=webp)
Up to 60mm of rain expected on Jeju Island, beware of strong winds and coastal flooding
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Due to the influence of Typhoon No. 30 'Champi', strong rain and wind are forecast centered on Jeju Island and the southern coast.
(Seoul = Yonhap News) Reporter Lee Min-young = Monday, the 26th, will be mostly cloudy across the country, with rain and strong winds expected to fall on Jeju Island and the southern coast due to the influence of Typhoon No. 30 'Champi'.
In the metropolitan area, raindrops of less than 0.1 mm may fall in the northern part of Gyeonggi Province between dawn and morning.
Rain will fall in the mountains of Gangwon, the southern coast of Jeollanam-do, the interior of Daegu and the southeastern part of Gyeongbuk until dawn, the inland area of Gyeongnam, the eastern coast of southern Gyeongbuk, Jeju Island, and Busan, Ulsan, and the southern coast of Gyeongnam until morning.
In particular, heavy rain will fall on Jeju Island and the southern coast due to the influence of Typhoon 'Champi'.
There will be places where up to 60 mm of rain falls on Jeju Island, and 10 to 40 mm of rain will fall on Busan, Ulsan, and the southern coast of Gyeongnam.
The expected precipitation in other regions is 5 to 10 mm in the mountainous areas of Gangwon, 5 to 20 mm in Gwangju and Jeonnam, 5 to 30 mm in the east coast and northeastern mountains of Gyeongbuk, 5 to 20 mm inland in Gyeongnam, and less than 5 mm in inland Daegu and southern Gyeongbuk.
There will be strong winds and high waves along the southern coast and Jeju Island.
In particular, Jeju Island, where a strong wind advisory is in effect, will have very strong winds with instantaneous wind speeds of over 70 km/h (20 m/s), so special attention must be paid to facility management and safety.
The sea waves will be 1.0 to 2.5 m in the East Sea, 0.5 to 1.5 m in the West Sea, and 0.5 to 2.5 m in the South Sea.
The wave height of the deep inner sea (the sea within about 200 km of the coastline) is expected to be 1.0 to 4.0 m in the East Sea, 0.5 to 3.5 m in the West Sea, and 1.5 to 5.0 m in the South Sea.
For the time being, the moon's gravitational pull is strong and the level of sea water is high. During high tide, the sea level will rise further and there is a possibility of flooding, especially in low-lying areas along the coast, so be careful about safety.
Meanwhile, the lowest morning temperature is expected to be 11 to 18 degrees, and the highest daytime temperature is expected to be 19 to 25 degrees.
Temperatures will be higher than normal (lowest 3 to 13 degrees, maximum 17 to 21 degrees), but the temperature difference between day and night will be large, around 10 degrees, especially in the inland areas of the country.
Below is the regional weather forecast for the 26th.
[morning, afternoon] (lowest to highest temperature) <probability of precipitation in the morning and afternoon>
▲ Seoul: [Cloudy, many clouds] (15∼21) <30, 20>
▲ Incheon: [Cloudy, many clouds] (15∼20) <30, 20>
▲ Suwon: [Cloudy, many clouds] (15∼21) <30, 20>
▲ Chuncheon: [Cloudy, Cloudy] (12~20) <40, 40>
▲ Gangneung: [A lot of clouds, a lot of clouds] (13∼20) <30, 20>
▲ Cheongju: [Lots of clouds, clear] (14∼23) <20, 0>
▲ Daejeon: [A lot of clouds, a lot of clouds] (13∼23) <20, 20>
▲ Sejong: [A lot of clouds, clear] (13~22) <20, 10>
▲ Jeonju: [A lot of clouds, clear] (15~25) <20, 10>
▲ Gwangju: [Clear, many clouds] (16∼25) <10, 20>
▲ Daegu: [A lot of clouds, rain at times, clear] (15~23) <60, 0>
▲ Busan: [Cloudy, occasional rain, lots of clouds] (18~23) <70, 20>
▲ Ulsan: [Cloudy, rainy at times, cloudy] (16~22) <60, 30>
▲ Changwon: [Cloudy, rainy at times, lots of clouds] (17~23) <60, 20>
▲ Jeju: [Cloudy, rain, cloudy] (20∼23) <60, 30>

Temperatures will drop sharply starting at night on the 27th due to cold air flowing in from the northwest, and on the 28th, morning temperatures will drop to below freezing and strong winds and high waves are expected to blow across the country.

Due to rainfall caused by Typhoon 'Champi', trees along the tracks fell down between Ilgwang Station and Wolnae Station on the Busan Donghae Line, causing disruption to the tram line. Due to this, train operations are being delayed and KORAIL is carrying out emergency recovery work.

Since the 23rd, a cumulative average of 85 mm of rain has fallen in the Gyeongnam region, with precipitation concentrated in Tongyeong and Geoje, and fire authorities have completed eight safety measures, including concerns about soil leakage.

On Monday the 26th, temperatures across the country will be warmer than normal, but rain and strong winds are expected mainly in Jeju Island and the southern region. More than 120 mm of rain was predicted in the Jeju mountainous region.

With rain continuing until the 26th in Daegu and Gyeongbuk, the Gyeongbuk Fire Department implemented 15 safety measures, including road obstructions, over the weekend. Strong winds were forecast to blow across most of the region from the night of the 25th.
![[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=320&q=72&f=webp)
On Sunday, the 25th, it was mostly cloudy across the country, and heavy rain was forecast in the southern region and Jeju Island. Heavy rain of up to 200 mm or more is expected to fall in the mountainous areas of Jeju Island.