Seoul weather in August
August in Seoul: hot, soaked, with very humid — a fair time to visit.
#10 of 12 months in Seoul · #538 of 604 destinations to visit in August · comfort 53/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Seoul climate normals — August
| Daytime high | 29°C / 84°F | 🥵 hot |
|---|---|---|
| Nighttime low | 23°C / 73°F | |
| Feels like (high) | 33°C / 91°F | |
| Rainfall | 311 mm / 12.3 in | ⛈ soaked |
| Rainy days | 17 days | |
| Humidity | 86% | 💦 very humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 8 h/day | |
| Daylight | 13.6 h | |
| Wind | 14 km/h / 9 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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Seoul in August — FAQ
- Is August a good time to visit Seoul?
- August in Seoul: hot, soaked, with very humid — a fair time to visit. It ranks #10 of 12 months for Seoul on SeasonMap's comfort score (53/100).
- What is the weather like in Seoul in August?
- In August, Seoul averages a daily high of 28.7°C and a low of 22.5°C, with about 311.2 mm of rain over roughly 17.4 rainy days.
- What is the air quality in Seoul in August?
- Seoul has a mean US Air Quality Index of about 93 in August.