Busan weather in May
May in Busan: nice, rainy — one of the best months to visit.
#2 of 12 months in Busan · #193 of 604 destinations to visit in May · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Busan climate normals — May
| Daytime high | 20°C / 68°F | 😎 nice |
|---|---|---|
| Nighttime low | 15°C / 58°F | |
| Feels like (high) | 21°C / 70°F | |
| Rainfall | 107 mm / 4.2 in | 🌧 rainy |
| Rainy days | 8 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 12°C / 54°F | |
| Sunshine | 9.9 h/day | |
| Daylight | 14 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 72 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Busan in May — FAQ
- Is May a good time to visit Busan?
- May in Busan: nice, rainy — one of the best months to visit. It ranks #2 of 12 months for Busan on SeasonMap's comfort score (85/100).
- What is the weather like in Busan in May?
- In May, Busan averages a daily high of 20.1°C and a low of 14.5°C, with about 106.6 mm of rain over roughly 8.2 rainy days.
- What is the air quality in Busan in May?
- Busan has a mean US Air Quality Index of about 72 in May.