Seoul weather in October
October in Seoul: nice, a little rain, with very humid — one of the best months to visit.
#2 of 12 months in Seoul · #184 of 604 destinations to visit in October · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Seoul climate normals — October
| Daytime high | 19°C / 66°F | 😎 nice |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Feels like (high) | 18°C / 64°F | |
| Rainfall | 61 mm / 2.4 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 9°C / 48°F | |
| Sunshine | 8.4 h/day | |
| Daylight | 11.2 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 78 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Seoul in October — FAQ
- Is October a good time to visit Seoul?
- October in Seoul: nice, a little rain, with very humid — one of the best months to visit. It ranks #2 of 12 months for Seoul on SeasonMap's comfort score (84/100).
- What is the weather like in Seoul in October?
- In October, Seoul averages a daily high of 18.8°C and a low of 9.8°C, with about 60.8 mm of rain over roughly 6 rainy days.
- What is the air quality in Seoul in October?
- Seoul has a mean US Air Quality Index of about 78 in October.