temperature in Zhongshan (first week of December)

Hi, at that time, the average temperature can be about 16-18 C. While according to the weather reports of the past years, the lowest temperature could reach to 8 C and the highest temperature could be 26 C. Therefore, generally, you can take along long-sleeved shirts, light coat and a warm overcoat in case the drop of the temperature. It hardly rains at that time.
Anyway, do pay attention to the weather forecast as you are outing.