December weather forecast
Xi'an, China

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.