Climate averages 1991–2020
Shiyan weather
in December.
A cool, fairly dry month: the 11th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Shiyan: daytime highs average 9.7°C and nights cool to about 1.5°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 21 mm of rain on roughly 5 days, which makes December a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 03 min on an average December day.
The nearest other city in this atlas is Danjiangkou (69 km away). In December its highs average 10.4°C, 0.7°C warmer than Shiyan, with 17 mm of rain.
Among the 884 cities listed in China, Shiyan ranks joint 420th of 884 for the warmest December highs and joint 458th of 884 for the driest December (rainfall, lowest first). The mean December high of those 884 cities is 7.5°C; Shiyan is 2.1°C warmer than that mean.
From December to January, average highs fall by 1.8°C to 7.9°C, and monthly rainfall rises from 21 mm to 23 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
Shiyan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.9°C-0.2°C | -0.2°C | 23 | 4.8 | 10.310 h |
| February | 10.8°C2.0°C | 2.0°C | 27 | 5.4 | 11.011 h |
| March | 15.9°C6.0°C | 6.0°C | 48 | 7.5 | 12.012 h |
| April | 22.1°C11.6°C | 11.6°C | 53 | 7.6 | 13.013 h |
| May | 26.4°C16.5°C | 16.5°C | 78 | 9.1 | 13.814 h |
| June | 30.0°C21.1°C | 21.1°C | 102 | 8.1 | 14.314 h |
| July | 31.4°C24.0°C | 24.0°C | 130 | 12.8 | 14.114 h |
| August | 30.3°C23.3°C | 23.3°C | 122 | 12.2 | 13.413 h |
| September | 25.8°C18.8°C | 18.8°C | 99 | 10.0 | 12.412 h |
| October | 21.0°C13.2°C | 13.2°C | 76 | 9.0 | 11.411 h |
| November | 15.1°C7.0°C | 7.0°C | 45 | 7.2 | 10.511 h |
| December, selected | 9.7°C1.5°C | 1.5°C | 21 | 4.8 | 10.010 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
- Danjiangkou in DecemberChina · 69 kmHigh 10.4°C · Low 1.4°C · 17 mm rain
- Laohekou in DecemberChina · 88 kmHigh 10.4°C · Low 1.0°C · 15 mm rain
- Gucheng Chengguanzhen in DecemberChina · 91 kmHigh 10.2°C · Low 1.0°C · 19 mm rain
- Dengzhou in DecemberChina · 123 kmHigh 10.2°C · Low 0.2°C · 14 mm rain
- Nanzhang Chengguanzhen in DecemberChina · 138 kmHigh 10.5°C · Low 1.5°C · 22 mm rain
- Zhenping in DecemberChina · 142 kmHigh 9.7°C · Low -0.6°C · 12 mm rain
- Xiangyang in DecemberChina · 145 kmHigh 10.6°C · Low 1.2°C · 16 mm rain
- Shangluo in DecemberChina · 157 kmHigh 6.2°C · Low -2.4°C · 15 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 Shiyan) is explained once on the Shiyan year overview and on the Sources, method and limits page.