Seoul, South Korea climate
Average temperatures, precipitation and all-time records for Seoul, South Korea, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is August, averaging a high of 30°C, and its coldest is January, with an average low of -8°C.
Seoul, officially Seoul Special Metropolitan City, is the capital and largest city of South Korea, and the largest city in the whole of Korea. via Wikipedia
Notable weather in Seoul
In August 2022, record-breaking rainfall flooded Seoul, submerging roads and low-lying semi-basement homes and killing several people across the capital region. Read more →
Seoul average temperatures by month
Typical daily high and low, and average precipitation, for each month in Seoul, South Korea, based on 1980–2026 records. The wettest month is July (13 mm on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 1°C | -8°C | 0 mm |
| February | 5°C | -5°C | 0 mm |
| March | 11°C | 0°C | 0 mm |
| April | 18°C | 7°C | 3 mm |
| May | 22°C | 12°C | 3 mm |
| June | 27°C | 18°C | 5 mm |
| July | 28°C | 22°C | 13 mm |
| August | 30°C | 23°C | 8 mm |
| September | 26°C | 17°C | 5 mm |
| October | 20°C | 10°C | 3 mm |
| November | 12°C | 2°C | 3 mm |
| December | 4°C | -5°C | 0 mm |
Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -23°C to 46°C scale, so the whole year's rhythm reads at a glance.
Thinking of visiting Seoul?
Trips live and die by the weather. See how Seoul's comfort stacks up against where you live. Seoul is pre-loaded, just add your city.
Record extremes
- Hottest day on record: 38°C on 2018-08-15
- Coldest day on record: -25°C on 2001-01-13
Percentiles compare each day to Seoul, South Korea's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →