South Korea experiences four distinct seasons, with hot summers and cold winters. The climate can vary depending on the region of the country, with the northern parts experiencing colder winters than the southern parts. South Korea also experiences monsoon season from June to September and is affected by climate change. Major cities like Seoul and Busan are experiencing the urban heat island effect due to their high population density and urbanization. Visitors should take precautions during monsoon season and be aware of the urban heat island effect in major cities when planning a trip to South Korea.