[2026] What are the characteristics of the climate in South Korea and what is the best clothing? Compare the difference with Japan

Korea has four distinct seasons, with hot summers and cold and dry winters. Spring and autumn are comfortable, and many people visit for sightseeing during the autumn leaves and cherry blossom seasons. There are differences in temperature and rainfall between urban areas such as Seoul and Busan and rural areas, and each has different characteristics.

In this article, I will explain the climate characteristics of South Korea and the differences from Japan.

[Annual Average Temperature in Korea]

What are the characteristics of the climate in Korea and what is the best clothing? Compare the difference with Japan

Korean Climate Features

South Korea is located between 33 and 38 degrees north latitude, and the capital Seoul is on the same latitude as Niigata, Japan. Compared to Japan, the humidity is lower and the amount of rainfall is less, so the dry and stable climate continues throughout the year. On the other hand, Busan is on the same latitude as Kyoto and Aichi, and the maximum daytime temperature is over 34℃ from the end of July, and the hot and humid days continue until mid-August.

South Korea is famous for its extreme temperature differences, especially in the winter, when compared to areas of the same latitude in Japan, it is extremely cold. It is also characterized by four distinct seasons.

South Korea has diverse topography and is close to the sea and mountains, so the climate can vary from region to region. For example, areas facing the sea, such as Busan and Jeju Island, are relatively warm and have a lot of rainfall, while inland areas such as Seoul and Gyeonggi-do have a cold climate in winter.

Korean Spring Weather (March to May)

The weather in Korea in spring is relatively warm during the day but still chilly at night. Temperatures range from 15°C to 20°C during the day and can feel warm on sunny days. However, the temperature can drop suddenly after sunset, so it's a good idea to bring a jacket.

Also, it is recommended that you wear a jacket that can block the wind, as it is often windy in spring in Korea. Light jackets, cardigans, and spring coats are suitable. In addition, there is a temperature difference between day and night, so you can wear a long-sleeved shirt or sweater and take it off if necessary.

Prepare shoes that are light and easy to wear, such as sneakers or loafers. Spring is also the season for hay fever, so don't forget to bring protective equipment such as masks and sunglasses. In general, spring in Korea is a relatively pleasant season, but it is important to be careful as the temperature and weather fluctuate.

Summer climate in Korea (June to August)

Summer in Korea is hot and humid due to the high temperature and high humidity. The Pacific side is also affected by typhoons, so be careful of sudden heavy rains and strong winds. Temperatures often exceed 25°C to 30°C during the day, especially in August. Under such circumstances, it is recommended to wear light and breathable clothing in summer in Korea.

Light T-shirts and shirts, cotton dresses and skirts are ideal. It is a good idea to wear protective gear such as hats, parasols, and sunglasses to protect yourself from the sun. Light and breathable shoes such as sandals or sneakers are recommended. If you are going out for a long time, you can protect yourself from UV rays by wearing a summer jacket or hoodie with UV protection.

In general, summer in Korea can be very hot and humid. It is recommended that you wear light, breathable clothing that also protects against UV rays. It's a good idea to bring an umbrella or raincoat in case the weather changes suddenly.

Korean climate in autumn (September to November)

Autumn in Korea is chilly in the mornings and evenings, but the days are pleasant and refreshing. Autumn has many sunny days, making it the perfect season for outdoor activities such as autumn leaf viewing. Temperatures range from 20°C to 25°C during the day and 10°C to 15°C at night. In autumn, the temperature difference is large, so it's a good idea to prepare a light jacket or cardigan for mornings and evenings.

For autumn clothes, we recommend a casual style that combines light outerwear, jackets, skirts, and pants to match the refreshing season. Autumn is the season when you can enjoy outdoor activities such as viewing autumn leaves and taking walks, so it would be a good idea to wear sneakers or other shoes that are easy to walk in. It's often dry, so don't forget to bring moisturizing items.

Overall, autumn in Korea is pleasant and perfect for outdoor activities. Because the temperature difference is drastic, it is safe to prepare a light outerwear or jacket.

Winter climate in Korea (December to February)

Winters in Korea are extremely cold, with dry, cold winds blowing especially from January to February. When you go out, it is important to wear a thick coat or down jacket to keep warm. Temperatures will often drop below freezing during the day and below -10°C at night. Especially in the northern regions and mountainous areas, the cold becomes severe, so it is essential to take measures against the cold.

For winter clothes, we recommend a style that emphasizes protection against the cold. Coordinates that combine items such as down jackets, coats, mufflers, gloves, and hats are common. In addition, outerwear that is easy to put on and take off is recommended, as indoors are often heated.

In general, winter in Korea is very cold, so it is important to take measures against the cold. Let's enjoy Korean gourmet with accessories such as thick coats, down jackets, mufflers, gloves, and hats.

Average temperatures in Seoul, Busan, and Jeju, South Korea

Annual temperature in Seoul

Spring and autumn are relatively warm. Summers are hot and humid and winters are very cold. Especially in winter, the temperature sometimes drops below freezing, and it often snows. On the other hand, summer can be humid and uncomfortable.

Annual temperature in Busan

It is warmer than Seoul, and the climate is relatively warm, around 0°C even in winter. Summers are hot and humid and can be uncomfortable. Since Busan faces the sea, there are times when the sea breeze blows, making it relatively comfortable even in summer.

Annual temperature in Jeju

It is relatively warm all year round and rarely drops below freezing even in winter. Since Jeju faces the sea, the sea breeze often blows, making it a relatively comfortable place to live. However, it is necessary to be aware that typhoons can cause heavy rains in autumn.

Precipitation in Seoul, Busan, and Jeju, South Korea

Precipitation in Seoul

Precipitation is relatively even throughout the year, with annual precipitation around 1,000 mm. There is a lot of precipitation in spring and autumn, but heavy rains such as the rainy season and typhoons are not common.

Humidity is high in summer, and precipitation tends to be less than in the rainy season. Winters are dry and often sunny.

Precipitation in Busan

Because Busan is located on the Pacific Ocean side, it tends to get a lot of rainfall. The annual precipitation is around 1,200 mm, with heavy rainfall in spring and autumn.

Summer is the rainy season, so be careful of sudden downpours. Winters are often dry and cold with little rainfall.

Precipitation in Jeju Island

Jeju Island is prone to tropical cyclones and typhoons, which can bring strong winds and heavy rains in summer. The rainy season is from June to August, and heavy rainfall is to be expected during this period.

In winter, there is little rainfall and the weather is often sunny. The annual rainfall is around 1,200mm, with heavy rainfall in spring and autumn.

Understand the characteristics of the climate and go on a trip to Korea!

Korea is full of attractions such as beautiful nature, historical cultural heritage, and delicious food. In the capital, Seoul, you will find vibrant streets and the latest technology. If you go to Jeju Island or Gangwon-do, you can feel the quiet nature and traditional culture.

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