Sanya weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Excellent
Best time to visit: November – March
What is the weather like in Sanya in January?
In January, Sanya is warm: daytime highs average 24 °C, and nights cool down to about 19 °C. The sea averages 23.6 °C – pleasant for swimming. The sun is scarce, with only about 4 hours a day. Rain is rare: about 3 days bring 13 mm in total. All in all, January is an excellent month for a holiday in Sanya.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 82 | 82 | 82 |
| Day | 24° | 24° | 24° |
| Night | 20° | 19° | 20° |
| Sea | 25° | 24° | 23° |
| Sun | 4 h | 4 h | 4 h |
| Rain days | 3 | 3 | 4 |
More details for January
- Daylight
- 11 h 9 min07:16 – 18:25
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 12 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 58 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+8Asia/Shanghai
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %8 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- Swimwear
- Sunscreen
- Sunglasses & sun hat
Sanya in January: quick answers
Is Sanya hot in January?
Warm rather than hot: in January, daytime highs in Sanya average 24 °C and nights cool to about 19 °C.
Can you swim in Sanya in January?
Yes. In January the sea averages 23.6 °C – pleasant for swimming.
Does it rain much in Sanya in January?
Rain is rare: about 3 days bring 13 mm in total.
Sanya month by month
The whole year in SanyaAll destinations: ChinaWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences