Weather and clothes in Korea in February

Generally speaking, the weather in Jeju Island and Busan is warmer than that in Seoul, and the coldest weather in Korea is basically 12 to 1.

The temperature is about-10 degrees, it will get warmer in February, and the coldest is about zero degrees.

In South Korea, the most people in winter are thermal underwear and thermal coats.

Some even wear thick down jackets or windproof coats as in the Spring and Autumn Period.

If you live in the south of China, you can bring a set of thermal underwear, plus windproof pants and down jacket.

I think what you said about thermal underwear+shirt+sweater+scarf is enough. I hope I can help you. If you have any questions, you can ask.