Incheon weather in August
August in Incheon: warm, soaked, with very humid — a gamble, with 16 rainy days.
#10 of 12 months in Incheon · #790 of 897 destinations to visit in August · comfort 57/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Incheon in August
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Incheon climate normals — August
| Daytime high | 28°C / 82°F | 🌤 warm |
|---|---|---|
| Nighttime low | 23°C / 73°F | |
| Rainfall | 287 mm / 11.3 in | ⛈ soaked |
| Rainy days | 16 days | |
| Humidity | 86% | 💦 very humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 8.1 h/day | |
| Daylight | 13.6 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 93 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Incheon in August — FAQ
- Is August a good time to visit Incheon?
- August in Incheon: warm, soaked, with very humid — a gamble, with 16 rainy days. It ranks #10 of 12 months for Incheon on SeasonMap's comfort score (57/100).
- What is the weather like in Incheon in August?
- In August, Incheon averages a daily high of 27.8°C and a low of 23°C, with about 286.6 mm of rain over roughly 15.6 rainy days.
- What is the air quality in Incheon in August?
- Incheon has a mean US Air Quality Index of about 93 in August.