In January , Nanjing had cool weather. Average high temperature was 11.1°C (52°F), and low was 0.6°C (33°F). Temperatures changed a lot that month, from -4°C (24.8°F) to 16°C (60.8°F). Most days were cloudy—15 out of 31—and there was some rain or snow at the end of the month. Air quality was good on 20 days, but had light pollution on 4 days, especially in the middle of January.
| Average Maximum | Average Minimum | Highest Maximum | Lowest Minimum | |
| ℃ | 11.1° | 0.6° | 16° | -4° |
| ℉ | 52° | 33° | 60.8° | 24.8° |
Sunny: 8 days
Cloudy: 12 days
Rainy: 5 days
Snowy: 1 day
In early January, Nanjing sees temperatures ranging from -4℃ to 14℃ with mostly cloudy or sunny days and occasional fog . Dress in warm layers: start with thermal underwear, add a thick sweater, and top with a down jacket or heavy coat . Wear fleece-lined pants and snow boots to keep feet warm, especially on colder days like Jan 9 when it hits -4℃. Don't forget a scarf, gloves, and hat to shield from the wind . Bring a compact umbrella in case of sudden light rain, and a small hand warmer for extra comfort outdoors .
In mid-January, highs get milder, reaching up to 16℃, but lows are still cold around -2℃; day and night temperatures differ a lot. Dress in layers: put on thermal underwear first, then a light sweater, and a windproof jacket you can easily take off at noon. Thin thermal leggings under regular pants work well, and pair them with waterproof sneakers. Bring a thin scarf to adjust when temperatures change. A reusable mask is good because some days have mild pollution. Occasional rain may happen, so keep a foldable umbrella handy.
Late January sees temperatures from -3℃ to 16℃, with more rainy days and cooler stretches. Layer your clothes to handle rain and cold: put on thermal underwear first, then a wool sweater, and finish with a water-resistant down coat. You need fleece-lined pants and waterproof boots, especially on rainy days like Jan 24-25. Pack a warm hat and touchscreen gloves for chilly mornings. Bring a strong umbrella and waterproof shoe covers to keep dry. A small tote bag works well for carrying layers you take off when afternoons warm up.
There's a unique charm in touring Nanjing in January, even with the chill. Wander Laodongmen to see red lanterns glow on ancient streets, or head to Plum Blossom Hill in Ming Xiaoling Mausoleum to find the faint scent of early plum blossoms. If your trip is during Spring Festival, Xuanwu Lake holds a Spring Festival Garden Party. Folk shows and intangible cultural heritage experiences are there, and it's very lively. To warm up, have a bowl of pidu noodles with chili oil, or try sweet lotus root porridge—both are real tasty foods to beat the cold.