Climate averages 1991–2020
Chengdu weather
in December.
A cool, very dry month: the 11th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Chengdu: daytime highs average 11.1°C and nights cool to about 4.6°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 4.1 mm of rain on roughly 1 day, which makes December a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 12 min on an average December day.
The nearest other city in this atlas is Deyang (60 km away). In December its highs average 10.5°C, 0.5°C cooler than Chengdu, with 9.7 mm of rain.
Among the 884 cities listed in China, Chengdu ranks joint 304th of 884 for the warmest December highs and joint 94th of 884 for the driest December (rainfall, lowest first). The mean December high of those 884 cities is 7.5°C; Chengdu is 3.5°C warmer than that mean.
From December to January, average highs fall by 1.3°C to 9.8°C, and monthly rainfall falls from 4.1 mm to 3.4 mm.
The annual picture
December 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
Chengdu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.8°C3.1°C | 3.1°C | 3.4 | 1.0 | 10.410 h |
| February | 12.4°C5.1°C | 5.1°C | 6.9 | 2.1 | 11.111 h |
| March | 17.3°C9.0°C | 9.0°C | 19 | 5.5 | 12.012 h |
| April | 23.2°C13.8°C | 13.8°C | 43 | 7.8 | 12.913 h |
| May | 27.1°C18.0°C | 18.0°C | 66 | 9.7 | 13.714 h |
| June | 29.1°C21.1°C | 21.1°C | 128 | 11.6 | 14.114 h |
| July | 30.0°C22.7°C | 22.7°C | 292 | 19.7 | 13.914 h |
| August | 29.5°C22.4°C | 22.4°C | 290 | 19.7 | 13.313 h |
| September | 25.5°C19.3°C | 19.3°C | 134 | 12.7 | 12.412 h |
| October | 20.6°C15.0°C | 15.0°C | 40 | 8.5 | 11.411 h |
| November | 16.2°C10.0°C | 10.0°C | 16 | 4.3 | 10.611 h |
| December, selected | 11.1°C4.6°C | 4.6°C | 4.1 | 1.3 | 10.210 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
December in nearby cities
- Deyang in DecemberChina · 60 kmHigh 10.5°C · Low 4.4°C · 9.7 mm rain
- Meishan in DecemberChina · 73 kmHigh 11.6°C · Low 5.4°C · 28 mm rain
- Mianzhu, Deyang, Sichuan in DecemberChina · 76 kmHigh 8.8°C · Low 4.0°C · 28 mm rain
- Luojiang in DecemberChina · 82 kmHigh 10.3°C · Low 4.1°C · 9.7 mm rain
- Ziyang in DecemberChina · 82 kmHigh 11.9°C · Low 5.8°C · 18 mm rain
- Mianyang in DecemberChina · 107 kmHigh 10.8°C · Low 4.0°C · 7.6 mm rain
- Leshan in DecemberChina · 126 kmHigh 11.5°C · Low 6.1°C · 42 mm rain
- Ya'an in DecemberChina · 127 kmHigh 9.8°C · Low 4.4°C · 44 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 Chengdu) is explained once on the Chengdu year overview and on the Sources, method and limits page.