Climate & Weather Guide in South Korea

Climate zones, seasonal temperatures, rainfall patterns, and best travel times

South Korea features a humid continental climate in the north and humid subtropical climate in the south, with four highly distinct seasons. The country experiences hot, humid summers with heavy rainfall from July to August due to the East Asian monsoon, and cold, dry winters with occasional snow. 2024 was recorded as the hottest year on record, with an average annual temperature of 14.5°C. Annual precipitation ranges from 1,300mm to 1,500mm, with about 60% occurring in summer. Humidity averages 60-70%, and sunshine hours reach approximately 2,100-2,300 annually. Residents should prepare for extreme temperature variations and seasonal rainfall.

Summer Average

23-30°C

Winter Average

-5-5°C

Climate Types

Humid Continental and Humid Subtropical

Annual Rainfall

1300-1500 mm

Sunshine Hours

2,100-2,300 hrs/yr

Average Humidity

60-70%

Regional Climate Variations

Seoul and Central Region

The central region, including Seoul, experiences a dry-winter humid continental climate with four distinct seasons. Summers are hot and humid with average highs of 26-30°C, while winters are cold with January lows around -2°C. Annual precipitation is approximately 1,418mm, with July being the wettest month. This area has moderate humidity averaging 62% and clear skies in October. Residents face significant temperature swings between summer and winter, requiring both heating and cooling systems.

Summer:23-30°C

Winter:-5-5°C

High rainfall

Hot, humid summers with heavy monsoon rains and cold, dry winters with occasional snow. Four distinct seasons create dramatic temperature variations throughout the year.

Southern Coastal Region

The southern coastal areas, including Busan and Jeju Island, feature a humid subtropical climate with milder winters and warmer summers. Winter temperatures rarely drop below 0°C, with January averages around 2-5°C. Summers are hot with highs reaching 28-31°C. Annual precipitation is slightly lower than the north at 1,300-1,400mm, but still concentrated in summer. This region has higher humidity averaging 65-70% and more sunshine hours. The coastal climate is more moderate, making it appealing for residents seeking less extreme winter conditions.

Summer:25-31°C

Winter:0-8°C

High rainfall

Milder winters with rare freezing temperatures and hot, humid summers. Coastal influence creates more moderate temperature variations compared to the central region.

South Korea offers four distinct seasons with hot, rainy summers and cold, dry winters, appealing to residents who enjoy seasonal variety. The southern coast provides milder winters while the central region experiences more extreme temperature variations. Both regions require preparation for heavy summer monsoon rains and significant seasonal temperature swings.

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