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What are the average temperatures of Seoul’s coldest and warmest months?

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Seoul: Changgyeong Palace — Seoul Changgyeong Palace, with downtown Seoul in the background.

In Seoul, the climate is characterized by significant seasonal temperature variations. The coldest month is January, which has a mean temperature of approximately 26 °F (−3 °C), while the warmest month is August, with a mean temperature of about 78 °F (25 °C).1