Seoul weather in April
April in Seoul: cool, a little rain — an excellent time to visit.
#3 of 12 months in Seoul · #221 of 604 destinations to visit in April · comfort 83/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Seoul climate normals — April
| Daytime high | 17°C / 62°F | 🙂 cool |
|---|---|---|
| Nighttime low | 7°C / 44°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 56 mm / 2.2 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 67% | 💧 humid |
| Dew point | 5°C / 42°F | |
| Sunshine | 9.6 h/day | |
| Daylight | 13.2 h | |
| Wind | 17 km/h / 11 mph | |
| Air quality (US AQI) | 92 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Seoul in April — FAQ
- Is April a good time to visit Seoul?
- April in Seoul: cool, a little rain — an excellent time to visit. It ranks #3 of 12 months for Seoul on SeasonMap's comfort score (83/100).
- What is the weather like in Seoul in April?
- In April, Seoul averages a daily high of 16.9°C and a low of 6.5°C, with about 55.7 mm of rain over roughly 5.8 rainy days.
- What is the air quality in Seoul in April?
- Seoul has a mean US Air Quality Index of about 92 in April.