Hangzhou weather in May
May in Hangzhou: warm, soaked, with poor air quality — a great time to visit.
#4 of 12 months in Hangzhou · #407 of 604 destinations to visit in May · comfort 76/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Hangzhou climate normals — May
| Daytime high | 26°C / 79°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Feels like (high) | 28°C / 82°F | |
| Rainfall | 164 mm / 6.4 in | ⛈ soaked |
| Rainy days | 14 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 16°C / 61°F | |
| Sunshine | 7.6 h/day | |
| Daylight | 13.7 h | |
| Wind | 14 km/h / 8 mph | |
| Air quality (US AQI) | 122 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hangzhou in May — FAQ
- Is May a good time to visit Hangzhou?
- May in Hangzhou: warm, soaked, with poor air quality — a great time to visit. It ranks #4 of 12 months for Hangzhou on SeasonMap's comfort score (76/100).
- What is the weather like in Hangzhou in May?
- In May, Hangzhou averages a daily high of 26°C and a low of 17.6°C, with about 163.6 mm of rain over roughly 14.4 rainy days.
- What is the air quality in Hangzhou in May?
- Hangzhou has a mean US Air Quality Index of about 122 in May.