December weather forecast
Tianjin, China

December signals the commencement of the cold, winter season. Constraints on temperature intensify as both minimum and maximum averages drop and daylight hours are the shortest. Humidity is again in the moderate range, with a low rainfall making it the driest month. The mercury swings between -4.9°C (23.2°F) and 3.9°C (39°F) through the course of the month.

Temperature

The arrival of December corresponds with a shift in temperature, down from a cool 10.6°C (51.1°F) in November to a wintry 3.9°C (39°F). In the month of December, the temperature generally rests at an average low of -4.9°C (23.2°F).

Humidity

In Tianjin, the average relative humidity in December is 59%.

Rainfall

In Tianjin, during December, the rain falls for 2 days and regularly aggregates up to 4mm (0.16") of precipitation. Throughout the year, in Tianjin, there are 63.8 rainfall days, and 544mm (21.42") of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 07:11 and sunset at 16:49. On the last day of the month, sunrise is at 07:30 and sunset at 16:58 CST.

Sunshine

December has the least sunshine of the year, with an average of 5.4h of sunshine.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 1 during December, leads to the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.