Seoul and Tokyo have distinct weather patterns due to their geographical location, topography, and human activities. Seoul has colder winters and higher rainfall levels throughout the year compared to Tokyo, which has milder winters and lower humidity levels during summers. Climate change caused by global warming is affecting both cities, with Seoul experiencing a more rapid increase in temperature compared to Tokyo. Visitors should consider weather conditions when planning their trip and adopt sustainable practices to mitigate the impact of climate change on the planet. Future research can explore the impact of climate change on other cities in Asia.