In December, Nanjing has temperatures ranging from -2°C to 21°C, getting colder as the month goes on. Weather includes sunny, cloudy and light rainy days. Winds are mostly level 2-3, and air quality is good except Dec 31 (102, mild pollution).
| Average Maximum | Average Minimum | Highesttd> | Highest Maximum | Lowest Minimum | |
| ℃ | 10.1° | -0.1° | 21° | -2° | |
| ℉ | 50.2° | 31.8° | 69.8° | 28.4° |
Sunny: 14 days
Cloudy: 11 days
Rainy: 2 days
Early December in Nanjing has temperatures 6°C to 21°C. Wear a thin sweater under a light coat. Mornings and evenings can be colder, so bring a scarf. Winds are level 2-4, so a windproof coat works. Take an umbrella too—there might be rain.
Nanjing gets much colder in mid-December, with temperatures from -1°C to 13°C. Wear warm layers—put a thick sweater under a down jacket or thick coat. Mornings and evenings are very cold, so you need gloves. There are more rainy days, so take an umbrella for sure. Also, pick warm shoes to keep your feet cozy.
Late December in Nanjing usually has temperatures -2°C to 12°C. It's very cold, so wear a thick down jacket, a thick sweater and thick long johns. You need a hat, scarf and gloves to keep warm. Winds are level 2-3, and there might be light rain. So carry an umbrella and wear warm shoes that keep water out to stay dry and warm.
Tour Nanjing in December, go to Zhongshan Mountain National Park. You can feel Ming Xiaoling Mausoleum's quiet winter mood and see blooming wintersweets near Sun Yat-sen Mausoleum. Pearl Spring's morning mist is a nice winter sight too. Eat warm food to stay cozy—crispy beef potstickers from Li Ji Halal Restaurant, hot duck blood vermicelli soup, and sweet osmanthus taro soup. Go to Laodongmen in Nanjing for these snacks. Take an umbrella, there may be light rain so don't forget it.