Guangzhou weather in May
May in Guangzhou: sweltering, soaked, with poor air quality — a fair time to visit.
#10 of 12 months in Guangzhou · #587 of 604 destinations to visit in May · comfort 50/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Guangzhou climate normals — May
| Daytime high | 30°C / 85°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 74°F | |
| Feels like (high) | 34°C / 93°F | |
| Rainfall | 265 mm / 10.4 in | ⛈ soaked |
| Rainy days | 19 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 22°C / 72°F | |
| Sunshine | 7.8 h/day | |
| Daylight | 13.3 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 107 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Guangzhou in May — FAQ
- Is May a good time to visit Guangzhou?
- May in Guangzhou: sweltering, soaked, with poor air quality — a fair time to visit. It ranks #10 of 12 months for Guangzhou on SeasonMap's comfort score (50/100).
- What is the weather like in Guangzhou in May?
- In May, Guangzhou averages a daily high of 29.6°C and a low of 23.6°C, with about 264.8 mm of rain over roughly 19.2 rainy days.
- What is the air quality in Guangzhou in May?
- Guangzhou has a mean US Air Quality Index of about 107 in May.