Incheon, South Korea climate
Average temperatures, precipitation and all-time records for Incheon, 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.
Incheon is a city located in northwestern South Korea, bordering Seoul and Gyeonggi Province to the east. Inhabited since the Neolithic, Incheon was home to just 4,700 people when it became an international port in 1883. via Wikipedia
How today compares
Latest recorded day: 2026-10-11. Each reading placed on Incheon, South Korea's own ±7-day seasonal distribution.
Percentiles marked * are pending verification.
Incheon average temperatures by month
Typical daily high and low, and average precipitation, for each month in Incheon, 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 | 17°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 Incheon?
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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 Incheon, 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 →