Climate averages 1991–2020
Sandu weather
in December.
A warm, moderately wet month: the 11th warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Sandu: daytime highs average 22.4°C and nights cool to about 18.1°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 41 mm of rain on roughly 6 days, which makes December a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 58 min on an average December day.
The nearest other city in this atlas is Dacheng (36 km away). In December its highs average 23.1°C, 0.7°C warmer than Sandu, with 27 mm of rain.
Among the 884 cities listed in China, Sandu ranks 13th of 884 for the warmest December highs and joint 679th of 884 for the driest December (rainfall, lowest first). The mean December high of those 884 cities is 7.5°C; Sandu is 14.8°C warmer than that mean.
From December to January, average highs fall by 0.6°C to 21.8°C, and monthly rainfall falls from 41 mm to 32 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
Sandu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.8°C16.7°C | 16.7°C | 32 | 6.7 | 11.111 h |
| February | 23.1°C17.5°C | 17.5°C | 28 | 5.7 | 11.511 h |
| March | 26.0°C20.0°C | 20.0°C | 31 | 6.3 | 12.012 h |
| April | 28.9°C23.1°C | 23.1°C | 57 | 10.5 | 12.613 h |
| May | 30.8°C25.7°C | 25.7°C | 108 | 16.6 | 13.113 h |
| June | 31.6°C27.3°C | 27.3°C | 142 | 14.3 | 13.313 h |
| July | 31.3°C27.2°C | 27.2°C | 191 | 15.6 | 13.213 h |
| August | 30.3°C26.7°C | 26.7°C | 276 | 20.5 | 12.813 h |
| September | 29.4°C25.5°C | 25.5°C | 192 | 19.7 | 12.312 h |
| October | 27.9°C23.7°C | 23.7°C | 118 | 11.7 | 11.712 h |
| November | 25.7°C21.3°C | 21.3°C | 45 | 6.1 | 11.211 h |
| December, selected | 22.4°C18.1°C | 18.1°C | 41 | 6.2 | 11.011 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
- Dacheng in DecemberChina · 36 kmHigh 23.1°C · Low 16.0°C · 27 mm rain
- Yaxing in DecemberChina · 38 kmHigh 22.8°C · Low 15.9°C · 24 mm rain
- Nada in DecemberChina · 48 kmHigh 22.8°C · Low 16.0°C · 27 mm rain
- Basuo in DecemberChina · 96 kmHigh 23.8°C · Low 18.4°C · 27 mm rain
- Wuzhishan in DecemberChina · 116 kmHigh 22.9°C · Low 15.9°C · 24 mm rain
- Xucheng in DecemberChina · 116 kmHigh 21.4°C · Low 17.0°C · 29 mm rain
- Haikou in DecemberChina · 121 kmHigh 21.6°C · Low 18.7°C · 35 mm rain
- Qiongshan in DecemberChina · 122 kmHigh 21.4°C · Low 18.8°C · 35 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 Sandu) is explained once on the Sandu year overview and on the Sources, method and limits page.