Climate averages 1991–2020
Sanya weather
in January.
A warm, very dry month: the coolest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Sanya: daytime highs average 24.1°C and nights cool to about 18.5°C. By daytime temperature it is the coolest month of the year.
Expect about 12 mm of rain on roughly 2 days, which makes January a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 10 min on an average January day.
The nearest other city in this atlas is Wuzhishan (59 km away). In January its highs average 22.9°C, 1.2°C cooler than Sanya, with 15 mm of rain.
Among the 884 cities listed in China, Sanya ranks 2nd of 884 for the warmest January highs and joint 359th of 884 for the driest January (rainfall, lowest first). The mean January high of those 884 cities is 5.9°C; Sanya is 18.2°C warmer than that mean.
From January to February, average highs rise by 1.1°C to 25.1°C, and monthly rainfall falls from 12 mm to 9.9 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sanya climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 24.1°C18.5°C | 18.5°C | 12 | 2.4 | 11.211 h |
| February | 25.1°C19.5°C | 19.5°C | 9.9 | 2.5 | 11.512 h |
| March | 27.2°C21.9°C | 21.9°C | 18 | 3.8 | 12.012 h |
| April | 29.2°C24.4°C | 24.4°C | 53 | 8.6 | 12.513 h |
| May | 30.3°C26.0°C | 26.0°C | 139 | 18.9 | 13.013 h |
| June | 30.4°C26.7°C | 26.7°C | 212 | 22.2 | 13.213 h |
| July | 30.0°C26.4°C | 26.4°C | 280 | 23.0 | 13.113 h |
| August | 29.9°C26.1°C | 26.1°C | 261 | 24.3 | 12.713 h |
| September | 29.5°C25.4°C | 25.4°C | 258 | 22.3 | 12.312 h |
| October | 28.4°C24.0°C | 24.0°C | 182 | 14.0 | 11.712 h |
| November | 26.9°C22.0°C | 22.0°C | 54 | 5.6 | 11.311 h |
| December | 24.6°C19.3°C | 19.3°C | 26 | 3.0 | 11.111 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Wuzhishan in JanuaryChina · 59 kmHigh 22.9°C · Low 15.2°C · 15 mm rain
- Wanning in JanuaryChina · 110 kmHigh 22.0°C · Low 18.4°C · 73 mm rain
- Basuo in JanuaryChina · 130 kmHigh 23.3°C · Low 17.2°C · 15 mm rain
- Yaxing in JanuaryChina · 135 kmHigh 22.9°C · Low 14.9°C · 12 mm rain
- Dacheng in JanuaryChina · 140 kmHigh 23.2°C · Low 15.1°C · 15 mm rain
- Nada in JanuaryChina · 141 kmHigh 22.8°C · Low 15.1°C · 15 mm rain
- Qionghai in JanuaryChina · 149 kmHigh 22.2°C · Low 17.7°C · 26 mm rain
- Sandu in JanuaryChina · 173 kmHigh 21.8°C · Low 16.7°C · 32 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sanya) is explained once on the Sanya year overview and on the Sources, method and limits page.