Sanya weather in January
January in Sanya: warm, dry, with very humid — an excellent time to visit.
#5 of 12 months in Sanya · #198 of 897 destinations to visit in January · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
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Sanya climate normals — January
| Daytime high | 25°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 19°C / 65°F | |
| Rainfall | 18 mm / 0.7 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | 17°C / 63°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 11.2 h | |
| Wind | 20 km/h / 12 mph | |
| Air quality (US AQI) | 55 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Sanya in January — FAQ
- Is January a good time to visit Sanya?
- January in Sanya: warm, dry, with very humid — an excellent time to visit. It ranks #5 of 12 months for Sanya on SeasonMap's comfort score (85/100).
- What is the weather like in Sanya in January?
- In January, Sanya averages a daily high of 24.6°C and a low of 18.5°C, with about 17.7 mm of rain over roughly 2.2 rainy days.
- What is the air quality in Sanya in January?
- Sanya has a mean US Air Quality Index of about 55 in January.