Sanya weather in December
December in Sanya: warm, dry, with very humid — an excellent time to visit.
#6 of 12 months in Sanya · #202 of 897 destinations to visit in December · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Sanya in December
No notes yet. Open Sanya on the map to add the first one.
Sanya climate normals — December
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 19°C / 66°F | |
| Rainfall | 14 mm / 0.5 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | 17°C / 62°F | |
| Sunshine | 9 h/day | |
| Daylight | 11.1 h | |
| Wind | 22 km/h / 14 mph | |
| Air quality (US AQI) | 57 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Sanya?
Loading map…
Sanya in December — FAQ
- Is December a good time to visit Sanya?
- December in Sanya: warm, dry, with very humid — an excellent time to visit. It ranks #6 of 12 months for Sanya on SeasonMap's comfort score (84/100).
- What is the weather like in Sanya in December?
- In December, Sanya averages a daily high of 24.8°C and a low of 19°C, with about 13.8 mm of rain over roughly 2.6 rainy days.
- What is the air quality in Sanya in December?
- Sanya has a mean US Air Quality Index of about 57 in December.