Climate in South Korea

South Korea has a highly diverse climate, with major differences between regions. Annual temperatures range from lows of -59°C in the coldest regions to highs of 39°C in the warmest areas. Annual precipitation ranges from 18mm in drier regions to 393mm in wetter parts of the country. Some regions receive significant snowfall, with up to 325cm annually, while other areas see little to none. The warmest areas are hot year-round while the coldest regions remain very cold, making South Korea a country of sharp climate contrasts.

Temperature patterns across South Korea vary by region, with distinct differences between areas. The Northeast is the warmest part of the country, with peak temperatures reaching 39°C and an annual average of 29°C. Cooler conditions are found in the Southeast, where winter lows drop to -59°C and an annual average of -56°C. This 84°C difference in annual averages between regions means travellers can experience vastly different conditions depending on which part of South Korea they visit. Regional temperature differences remain relatively consistent across seasons, with around 86°C of variation in both summer and winter. For example, Gangneung in the Gangwon averages 29°C annually, while Ulsan in the Ulsan averages -56°C.

South Korea sees notable variation in rainfall across its regions, ranging from 18mm to 393mm per year. The Northwest receives the most rainfall, at approximately 393mm annually. The Southeast is the driest, with around 18mm per year. Rainfall is distributed fairly evenly across the seasons, with no strong wet or dry period in most regions. The South sees the most snowfall, with up to 325cm annually, while other parts of the country receive little to none. Travellers should pack rain gear when visiting wetter areas, while drier regions offer more favourable conditions throughout the year.