Climate Insights for Suncheon

The climate in Suncheon is temperate. The average annual temperature is 14°C and approximately 1543mm of precipitation falls per year. Suncheon receives a notable amount of rainfall throughout the year, including during its driest month. Suncheon is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, December, February, when temperatures can drop to -3°C.

Temperatures in Suncheon vary considerably across the year, with a 33°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 30°C and the mean temperature sits around 26°C. The coldest month is January, when overnight lows fall to -3°C and the daily average is 1°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between November and December, with a 7°C shift in average temperatures.

Suncheon is a fairly wet location, receiving approximately 1543mm of precipitation annually, which averages out to around 129mm per month. The wettest month is July, averaging 310mm of rainfall. August and September also tend to see above-average precipitation. The driest month is December, with just 32mm. That's 278mm less than July, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Suncheon is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 15km/h in winter, 14km/h in spring, 12km/h in summer, 12km/h in autumn.

It is currently spring in Suncheon, which began on March 20, 2026. Suncheon is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 30°C, while the coldest stretch bottoms out in January near -3°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Suncheon is during October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 15°C with modest rainfall averaging 94mm per month. By contrast, August can be uncomfortably hot with highs reaching 30°C, while January is the coldest period with lows dropping to -3°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Suncheon based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.