Sanya weather in May
May in Sanya: hot, soaked, with clean air — fine if you can take 16 rainy days.
#7 of 12 months in Sanya · #552 of 897 destinations to visit in May · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Sanya in May
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Sanya climate normals — May
| Daytime high | 31°C / 88°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 80°F | |
| Rainfall | 154 mm / 6 in | ⛈ soaked |
| Rainy days | 16 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 10.5 h/day | |
| Daylight | 13 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 44 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Sanya in May — FAQ
- Is May a good time to visit Sanya?
- May in Sanya: hot, soaked, with clean air — fine if you can take 16 rainy days. It ranks #7 of 12 months for Sanya on SeasonMap's comfort score (80/100).
- What is the weather like in Sanya in May?
- In May, Sanya averages a daily high of 31°C and a low of 26.4°C, with about 153.5 mm of rain over roughly 16.2 rainy days.
- What is the air quality in Sanya in May?
- Sanya has a mean US Air Quality Index of about 44 in May.