Last updated: August 21, 2025
December in Nanjing, China offers a unique winter experience characterized by its cool climate and variable temperatures. With a maximum of 20°C (68°F) during the day and an average of 6°C (43°F), residents and visitors can expect brisk but manageable weather. Nights can plunge to a chilly -7°C (20°F), making warm clothing essential. The city experiences roughly 40 mm (1.6 in) of precipitation, spread over about seven days, contributing to the 77% humidity that lingers in the air. This month transforms Nanjing into a captivating winter landscape, perfect for those looking to embrace the season’s charm.
As December rolls into Nanjing, temperatures begin to dip, marking a noticeable transition into winter. With a minimum temperature of -7°C (20°F) and an average that settles around 6°C (43°F), the city experiences a brisk chill that contrasts sharply with the milder temperatures of the preceding months. Despite the cold, December sees a maximum temperature reaching 20°C (68°F), providing a welcome reprieve during the day. This month gently bridges the gap between the lingering warmth of autumn and the deep freeze of winter, setting the stage for the colder months ahead while still allowing residents to enjoy the occasional sunny, mild day.
As December ushers in the winter chill in Nanjing, precipitation levels taper off significantly, with only 40 mm (1.6 in) of rain recorded across 7 days. This decline marks a noteworthy shift from the summer months, which typically see much heavier rainfall, particularly in July and August when totals peak at 228 mm (9.0 in) and 189 mm (7.4 in), respectively. Following the wettest season, November and December experience a gradual decrease, with November recording 44 mm (1.7 in) and December continuing this trend. The diminishing rainfall not only signifies the onset of the dry season but also sets the stage for cooler temperatures, making it a defining time in Nanjing's climatic rhythm.
In Nanjing, China, December marks a shift in humidity trends as the monsoon months recede. With a humidity level of 77%, the air begins to feel noticeably drier compared to the peak summer months, where July and August soar to around 90% and 88% respectively. While the autumn transition starts to lower humidity levels, December still retains a moderate dampness, reflecting the city’s relatively humid climate throughout the year. This month's humidity also shows a drop from the 84% noted in November, highlighting a gradual movement towards a more comfortable winter season. As Nanjing embraces the cooler temperatures of late December, its humidity continues to play a subtle role in shaping the city's winter ambiance.
As December arrives in Nanjing, China, the UV Index drops to a moderate level of 4, marking a calming shift from the earlier months of the year, which experienced extreme UV exposure peaks of 11 in June and July. This reduction allows for more comfortable sun exposure with a burn time of 30 minutes, double that of the summer months. The trends reveal a significant seasonal variation, with the index beginning at a low of 5 in January, soaring through the spring and finally tapering off as winter approaches. As you enjoy the city's winter atmosphere, remember to check the UV levels, especially on sunny days. For more detailed insights on UV exposure throughout the year, visit Nanjing UV Index.
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As the year draws to a close, December in Nanjing brings a welcoming 216 hours of sunshine, a gentle decline from the peak summer months. Following a series of progressively sunnier months from January's 159 hours all the way to August's 296 hours, the city experiences a tapering of daylight as it transitions into winter. Despite the lower tally, December still enjoys a notable amount of sunshine compared to the early winter months of previous years, reflecting a resilient glow amidst the brisk air. With sunshine hours gradually receding but still abundant, December offers a perfect blend of warmth and charm, inviting residents and visitors alike to bask in the serene winter sun.
In December, Nanjing, China, enjoys an encouraging 68% chance of sunny weather, making it one of the sunniest months of the year. This marks a notable increase from the unusually low sunlight days seen in earlier months like March and July, which recorded only 26% and 24% chances, respectively. As autumn transitions into winter, the city's weather tends to brighten, with a significant rise in sunlit days compared to the preceding months like October and November. With the heightened likelihood of sunshine, December is an ideal time for travelers and locals alike to soak up the sun's warmth before the harsh cold of winter truly sets in.
In Nanjing, China, the pattern of daylight duration throughout the year reveals a captivating rhythm tied to the changing seasons. Starting with a modest 10 hours in January and December, the city gradually embraces longer days as winter fades, peaking at a generous 14 hours in the heart of June. As summer wanes, the daylight retreats gracefully, settling back to 13 hours in July and August, then tapering off to 12 hours in September. The approach of winter brings a gradual dimming, with November and December again marked by 10 hours of daylight. This cyclical journey not only shapes Nanjing's climate but also invites residents to adapt their lifestyles to the luxurious embrace of longer summer days and the brevity of winter's light.
December in Nanjing ushers in the chill of winter, marked by an average wind speed of 2.6 m/s (6 mph). As the year draws to a close, the winds tend to soften compared to the brisk breezes of the preceding months. Notably, this December's winds are among the gentler, reflecting a gradual decline from the slightly more blustery conditions observed in earlier months, particularly in July and February, where speeds reached 3.4 m/s (8 mph). This trend underscores a significant shift towards calmness, a welcome relief as residents cozy up for the winter season, while still being reminded of the vibrant energy that defines Nanjing's climate throughout the year.
Weather in Nanjing varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Nanjing, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather features a mild average temperature of 6°C (43°F), with a minimum of -7°C (20°F) and a maximum of 20°C (68°F). The month experiences about 40 mm of precipitation over approximately 7 days, accompanied by a humidity level of 77%. In contrast, January is slightly cooler, with an average temperature of 4°C (40°F), and temperatures dipping to a minimum of -10°C (13°F) and peaking at 18°C (64°F). Precipitation increases to 53 mm over 8 days, and humidity decreases to 70%. This change in weather patterns marks a transition from the relatively mild December to the chillier start of the new year. For more detailed information, you can refer to Nanjing weather in January.
December and February present notable differences in weather patterns despite having similar average temperatures. In December, temperatures range from a chilling minimum of -7°C (20°F) to a maximum of 20°C (68°F), with an average of 6°C (43°F), and the month sees approximately 40 mm (1.6 in) of precipitation over 7 days, accompanied by a humidity level of 77%. In contrast, February experiences even cooler minimum temperatures dropping to -11°C (13°F) but boasts a higher maximum of 26°C (79°F), maintaining the same average of 6°C (43°F). This month also witnesses increased precipitation at 52 mm (2.0 in) across 9 days, with slightly lower humidity at 73%. For more specific details on February weather, you can check Nanjing weather in February.
In December, temperatures in Nanjing range from a chilly minimum of -7°C (20°F) to a mild maximum of 20°C (68°F), with an average temperature of around 6°C (43°F). The month experiences relatively low precipitation, totaling around 40 mm (1.6 in) over approximately 7 days, while humidity levels sit at a moderate 77%. In contrast, March brings warmer weather, with temperatures starting at a minimum of 0°C (31°F) and reaching up to 29°C (84°F), averaging 12°C (54°F). During this month, precipitation increases to 66 mm (2.6 in) over about 10 days, and humidity rises slightly to 82%. For more details, you can check the Nanjing weather in March.
December and April present starkly different weather patterns. In December, temperatures range from a chilly -7°C (20°F) at night to a mild 20°C (68°F) during the day, with an average of 6°C (43°F). The month sees about 40 mm (1.6 in) of precipitation spread across 7 days, accompanied by a humidity level of 77%. In contrast, April enjoys much warmer conditions, with nighttime lows of 5°C (41°F) and daytime highs reaching 32°C (90°F), resulting in an average temperature of 17°C (62°F). This month also experiences increased precipitation of 69 mm (2.7 in) over 9 days and higher humidity at 86%. For more detailed information, you can check out Nanjing weather in April.
December and May present stark contrasts in weather patterns. In December, temperatures range from a chilly -7°C (20°F) to a mild 20°C (68°F), with an average of 6°C (43°F). The month experiences about 40 mm (1.6 in) of precipitation over 7 days and maintains a humidity level of 77%. In contrast, May boasts much warmer weather, with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 36°C (96°F) and an average of 22°C (72°F). Rainfall increases significantly during this month, totaling 143 mm (5.6 in) over 9 days, accompanied by higher humidity at 85%. For a closer look at May's weather, you can refer to Nanjing weather in May.
In December, the weather is significantly cooler, with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 20°C (68°F), and an average of 6°C (43°F). The month sees around 40 mm (1.6 in) of precipitation over approximately 7 days and maintains a humidity level of 77%. In contrast, June experiences much warmer conditions, with temperatures ranging from a minimum of 17°C (62°F) to a maximum of 36°C (96°F), and an average of 26°C (78°F). Rainfall is much higher in June, totaling 156 mm (6.2 in) over about 10 days, and the humidity is slightly elevated at 85%. For more details, check Nanjing weather in June.
December and July present stark contrasts in weather conditions. December's temperatures range from a chilly -7°C (20°F) to a mild 20°C (68°F), with an average of 6°C (43°F). The month typically experiences about 40 mm (1.6 in) of precipitation over seven days, accompanied by a humidity level of 77%. In contrast, July boasts much warmer temperatures, with a minimum of 19°C (67°F), an average of 28°C (83°F), and a maximum reaching 38°C (101°F). This summer month is notably wetter, receiving 228 mm (9.0 in) of rain spread over 18 days, alongside higher humidity levels at 90%. For more details, check out Nanjing weather in July.
December and August present strikingly different weather patterns. In December, temperatures range from a chilly -7°C (20°F) at their lowest to a mild 20°C (68°F) at their highest, with an average temperature of 6°C (43°F). The humidity is relatively low at 77%, and the month typically sees 40 mm (1.6 in) of precipitation, spread over about 7 days. In contrast, August boasts much warmer conditions, with minimum temperatures around 21°C (71°F) and highs reaching up to 38°C (100°F), resulting in an average temperature of 29°C (84°F). Humidity rises to 88%, and the month experiences considerably more rainfall, with 189 mm (7.4 in) over approximately 14 days. For more detailed insights, check out Nanjing weather in August.
When comparing the weather in December and September, there are striking contrasts in temperature and precipitation. December experiences cooler conditions, with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 20°C (68°F), averaging around 6°C (43°F). In contrast, September is much warmer, with temperatures varying from a minimum of 15°C (60°F) to a high of 36°C (97°F) and an average of 24°C (76°F). Additionally, September sees more precipitation, totaling 86 mm (3.4 in) across 10 days, compared to December's 40 mm (1.6 in) over 7 days. Humidity levels are relatively similar in both months, with September at 75% and December slightly higher at 77%. For those interested in more specifics, you can explore Nanjing weather in September.
December weather in Nanjing is notably colder than in October, with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 20°C (68°F), averaging around 6°C (43°F). In contrast, October sees much warmer temperatures, with a minimum of 7°C (45°F) and a peak reaching 36°C (97°F), averaging 18°C (65°F). While both months experience precipitation on seven days, December has less rainfall at 40 mm (1.6 in) compared to October's 54 mm (2.1 in). Humidity levels are quite similar, with December at 77% and October at 76%. For more details on October weather conditions, you can check this link: Nanjing weather in October.
In comparing the weather between November and December, December generally experiences cooler temperatures, with a minimum of -7°C (20°F) and an average of 6°C (43°F), compared to November's milder minimum of 0°C (32°F) and an average of 13°C (55°F). The maximum temperatures in December reach up to 20°C (68°F), while November sees highs of 28°C (83°F). Precipitation is similar in both months, with December receiving 40 mm (1.6 in) over 7 days and November seeing 44 mm (1.7 in) over 6 days. Humidity levels are slightly lower in December at 77%, compared to November's 84%. For more detailed information, you can refer to Nanjing weather in November.
As December unfolds in Nanjing, the city experiences a notable shift in weather, moving away from the mild warmth of autumn to the chill of winter. With temperatures dipping to an average of 6°C and even reaching lows of -7°C, residents and visitors alike must prepare for the brisk air and occasional frost. While December brings about relatively low precipitation levels, the humidity remains high at 77%, adding a sense of crispness to the atmosphere. Unlike the more humid, rainy months earlier in the year, December offers clear, cool days that showcase the city’s serene winter beauty. For more insights on how Nanjing’s weather changes throughout the year, check out Nanjing Climate.