December weather forecast
Xi'an, China

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Weather in December

December sees the peak of the cold season in Xi'an with temperatures nose-diving down to -2.5°C (27.5°F). Marked by its meager rainfall of 6mm (0.24"), it's the driest month of the year. Shortest daylight hours and the year’s least sunshine hours contribute to the city’s winter chills. Despite the low UV index, it's advisable to protect the skin from the dry, cold winds. The transition from November's cold to December's frosty weather signals the end of the year and the anticipation for another climatic cycle to begin in January.

Temperature

The arrival of December corresponds with a reduction in the average high-temperature, down from November's cool 12.2°C (54°F) to a chilly 6.4°C (43.5°F). An average low-temperature of -2.5°C (27.5°F) is anticipated throughout the nights during December.

Humidity

The average relative humidity in December is 69%.

Rainfall

The month with the least rainfall in Xi'an is December, when the rain falls for 3.4 days and typically collects 6mm (0.24") of precipitation.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 07:32 and sunset at 17:34. On the last day of December, in Xi'an, sunrise is at 07:50 and sunset at 17:44 CST.

Sunshine

The month with the least sunshine in Xi'an is December, with an average of 3h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 3 in December interprets into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

Frequently asked questions

How cold is December in Xi'an?

The high-temperature, in December, in Xi'an, is 6.4°C (43.5°F), while the low-temperature averages to -2.5°C (27.5°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is estimated at 39°C (102.2°F).

What is the average humidity in December in Xi'an?

In Xi'an, the average relative humidity in December is 69%.

What is the driest month in Xi'an?

December is the month with the least rainfall in Xi'an. Rain falls for 3.4 days and accumulates 6mm (0.24") of precipitation.

How much does it rain in Xi'an in December?

In Xi'an, in December, during 3.4 rainfall days, 6mm (0.24") of precipitation is typically accumulated.

What is the month with the shortest days in Xi'an?

With an average of 9h and 54min of daylight, December has the shortest days of the year in Xi'an.

How many hours of daylight does Xi'an have in December?

The average day length in December is 9h and 55min.

When are sunrise and sunset in December in Xi'an?

In December, on the first day of the month, sunrise is at 07:32 and sunset at 17:34. On the last day of the month, in Xi'an, China, sunrise is at 07:50 and sunset at 17:44 CST.

What is the month with the least sunshine in Xi'an?

The month with the least sunshine is December, with an average of 3h of sunshine.

How many hours of sunshine does Xi'an have in December?

In Xi'an, the average sunshine duration in December is 3h.

What are the months with the lowest UV index in Xi'an?

The months with the lowest UV index in Xi'an, China, are January and December, with an average maximum UV index of 3.

What is the UV index reading in December in Xi'an?

The average daily maximum UV index in December in Xi'an is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Xi'an, China

Average temperature in December - Xi
  • Average high temperature in December: 6.4°C

The warmest month (with the highest average high temperature) is July (32.1°C).
The month with the lowest average high temperature is January (4.8°C).

  • Average low temperature in December: -2.5°C

The month with the highest average low temperature is July (21.9°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).

Average humidity in December
Xi'an, China

Average humidity in December - Xi
  • Average humidity in December: 69%

The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is June (62%).

Average rainfall in December
Xi'an, China

Average rainfall in December - Xi
  • Average rainfall in December: 5.8mm

The wettest month (with the highest rainfall) is July (98.6mm).
The driest month (with the least rainfall) is December (5.8mm).

Average rainfall days in December
Xi'an, China

Average rainfall days in December - Xi
  • Average rainfall days in December: 3.4 days

The month with the highest number of rainy days is September (10.9 days).
The month with the least rainy days is December (3.4 days).

Average daylight in December /
Average sunshine in December
Xi'an, China

Average daylight in December / Average sunshine in December - Xi
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 3h and 0min

The month with the most sunshine is August (Average sunshine: 6h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).

Average UV index in December
Xi'an, China

Average UV index in December - Xi
  • Average UV index in December: 3

The months with the highest UV index are June and July (UV index 11).
The months with the lowest UV index are January and December (UV index 3).

Xi'an, China

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