What should I wear when traveling to South Korea in spring?

The average spring temperature in South Korea is 12℃~3℃. The average daytime temperature is 12°C. It is recommended to wear warm clothes such as suits, jackets, windbreakers, casual clothes, jackets, suits, and thin sweaters. The average temperature at night is 3°C. It is recommended to wear warm clothes such as windbreakers, coats, parkas, coats, sweaters, woolen suits, suits, and cold-proof clothing. The cities with the highest daily average temperatures in spring are Busan (27℃), Gwangju (30℃), Gangneung (28℃), and Jeju (29℃). The cities with the lowest daily average temperatures in spring in South Korea are Busan (-1℃), Gwangju (-3℃), Gangneung (-3℃), and Jeju (3℃).