Last updated: August 21, 2025
December in Nanjing, China presents a mild climate with average temperatures hovering around 17°C (63°F), peaking at a comfortable 29°C (84°F) and dipping to 7°C (45°F) at night. This month sees precipitation totaling 33 mm (1.3 in), typically spread over just four days, offering a mix of dry spells and light showers. With a humidity level at 75%, the air feels quite crisp, making it an ideal time for exploring the city's rich history and vibrant culture while bundling up against the cool, refreshing air.
As December ushers in the chill of winter, Nanjing experiences a notable drop in temperatures, with minimums averaging around 7°C (45°F). The city finds a cozy middle ground, showcasing a comfortable average temperature of 17°C (63°F), while daytime highs can reach a pleasant 29°C (84°F). This month marks a transition from the waning warmth of autumn, steadily cooling down from the milder November. The temperature range indicates that while the evenings may require a light jacket, the sunny days can still offer a taste of warmth, making December a unique blend of winter coziness and lingering autumnal warmth in Nanjing.
As December arrives in Nanjing, the precipitation begins to taper off, with 33 mm (1.3 in) of rainfall spread across just 4 days. This marks a noticeable decline from the heavy downpours experienced in the summer months, where June and August recorded over 200 mm. By early winter, the city sees a shift toward drier weather, following the peak rainy season that spans from May to August. The decrease in rainfall not only signifies the transition into the cooler season but also highlights the distinct seasonal variations that characterize Nanjing's climate, making December a relatively calm month for anyone looking to explore the city.
In December, Nanjing, China experiences a humidity level of 75%, a figure that reflects a slight drop from the higher percentages seen in the summer months, which peak around 85% in May and July. As the seasons transition, humidity levels gradually decrease from their late-summer highs, culminating in a relatively comfortable winter month. Comparatively, December's humidity sits at a moderate level—higher than the autumn months of October and November—indicating a gradual shift towards the dryer air typical of the cold season. Overall, the data reveals that while Nanjing often grapples with high humidity during the warmer months, December offers a more balanced climate, making it a pleasant time to enjoy the city's winter charm.
In December, Nanjing experiences a noticeable dip in UV radiation, with the UV Index dropping to 7, categorized as high. This reduction marks a shift from the extreme levels seen in the summer months, where values soared to 13 for several consecutive months. As a result, residents and visitors can expect a longer burn time of approximately 25 minutes before sun exposure leads to skin damage. This is a significant improvement compared to the swift 10-minute burn times in the peak summer months. With the winter chill setting in, it's a good time to enjoy outdoor activities while still being mindful of sun safety. For more detailed UV information, check out the Nanjing UV Index.
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Nanjing basks in a generous 264 hours of sunlight in December, marking the month's position as a radiant transition into winter. This amount of sunshine not only highlights a steady flux of daylight throughout the year but also reflects an overall pattern of increasing brightness as the months progress into summer, peaking in July with an impressive 326 hours. Following the summer, the sunlight gradually decreases but remains relatively high, ensuring that December still enjoys more daylight than many other winter months. This consistent seasonal rhythm underscores Nanjing's ability to embrace sunshine, even as the year draws to a close, creating a warm and inviting atmosphere during the festive season.
In Nanjing, China, December offers a 53% chance of sunny weather, making it one of the more favorable months for sunshine during the winter. This figure reveals an intriguing trend: as the year progresses into late fall, the likelihood of sunny days remains relatively high, with November peaking at 68%. While the chances dip in the subsequent months, December's sunshine probability stands out compared to the gloomy summer months of June and August, which drop to 9% and 18% respectively. Overall, if you're planning a visit in December, you can reasonably expect a mix of bright skies and cooler temperatures, making it a pleasant time to explore the city.
In Nanjing, China, December marks the return to shorter days, as daylight dips to just 10 hours, mirroring the length seen in January. This seasonal rhythm reveals a gradual decrease in sunlight starting from the longer days of May through July, when Nanjing enjoys up to 13 hours of bright daylight. As autumn approaches, daylight begins to wane, settling at 12 hours in both August and September, and then further contracting to 11 hours in October and November. The cycle concludes with December, reminding us of the quieter, darker days of winter. This pattern highlights Nanjing's dynamic seasonal changes, showcasing the ebb and flow of daylight throughout the year.
As December arrives in Nanjing, China, the average wind speed stabilizes at 2.9 m/s (6 mph), mirroring the consistent breezes of the preceding months. This gentle wind, slightly stronger than the summer's languid gusts, enhances the crispness of the winter air. Notably, the month follows a pattern established in October, which boasted the highest winds at 3.1 m/s (7 mph), a transition indicating the city’s move from the warmer autumn days into the cooler embrace of winter. As the year winds down, December's breeze whispers the promise of colder weather while maintaining a steady rhythm, reflecting a harmonious balance between nature’s calm and the fast-approaching new 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, Nanjing experiences warmer temperatures with a minimum of 7°C and an average high of 29°C, while January sees a slight drop with minimum temperatures reaching 2°C and an average high of 28°C. December tends to be more humid, with humidity levels around 75%, compared to January's 71%. Additionally, December has a higher precipitation level of 33 mm over about 4 days, whereas January averages 22 mm of rain across 3 days. For more information, you can check out Nanjing weather in January.
In December, the weather offers a mild climate with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 29°C (84°F), while the average temperature sits at 17°C (63°F). This month experiences 33 mm (1.3 in) of precipitation over four days, contributing to a humidity level of 75%.
February, on the other hand, brings slightly cooler conditions, with minimum temperatures dropping to 4°C (39°F) and a maximum of 28°C (83°F), while the average temperature is around 16°C (61°F). Precipitation increases slightly to 36 mm (1.4 in) and occurs over five days, alongside a relative humidity of 73%.
For more detailed insights, you can check out Nanjing weather in February.
In December, Nanjing experiences milder temperatures with a minimum of 7°C (45°F) and an average of 17°C (63°F), peaking at a maximum of 29°C (84°F). The month sees relatively low precipitation, totaling 33 mm (1.3 in) over just 4 days, and the humidity is around 75%. In contrast, March warms up slightly with a minimum temperature of 8°C (47°F) and an average of 19°C (67°F), reaching a peak of 32°C (90°F). However, March is wetter, with precipitation accumulating to 60 mm (2.4 in) over 9 days and slightly higher humidity at 79%. This shift from December to March highlights a transition to warmer and more humid conditions. For more specific details, you can check Nanjing weather in March.
In December, the weather is generally mild, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 29°C (84°F), and an average of 17°C (63°F). Precipitation is relatively light at 33 mm (1.3 in) over about 4 days, with humidity around 75%. In contrast, April brings warmer temperatures, with a minimum of 11°C (53°F) and a maximum of 33°C (91°F), giving an average temperature of 22°C (72°F). However, it also experiences increased rainfall, totaling 73 mm (2.9 in) across approximately 10 days, and slightly higher humidity at 80%. For more detailed information, you can check Nanjing weather in April.
In December, the weather in Nanjing shows a mild range of temperatures with minimums around 7°C (45°F) and maximums reaching up to 29°C (84°F), making for comfortable days. However, it experiences relatively low precipitation at 33 mm (1.3 in) over just 4 days, accompanied by moderate humidity levels of 75%. In contrast, May brings significantly warmer conditions, with average temperatures rising to 26°C (79°F) and maximums soaring to 38°C (100°F). This month also sees a dramatic increase in rainfall, accumulating 139 mm (5.5 in) over 16 days, resulting in higher humidity levels at 85%. For more detailed insights, you can explore Nanjing weather in May.
In December, the weather in Nanjing is generally mild with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 29°C (84°F). The average temperature hovers around 17°C (63°F), and the precipitation is relatively low at 33 mm (1.3 in) over just 4 days, accompanied by a humidity level of 75%. In stark contrast, June experiences a much warmer climate, with temperatures varying from a minimum of 22°C (73°F) to a scorching maximum of 36°C (97°F) and an average of 28°C (83°F). However, June is notably wetter, receiving 264 mm (10.4 in) of precipitation over 24 days, and the humidity rises slightly to 81%. For more detailed information, you can check Nanjing weather in June.
In Nanjing, December weather is characterized by milder temperatures, with averages around 17°C (63°F) and a relatively low maximum of 29°C (84°F). This month sees minimal precipitation, averaging only 33 mm (1.3 in) across about four days, and a humidity level of 75%.
In contrast, July brings significantly warmer conditions, with minimum temperatures starting at 25°C (76°F) and soaring to a blistering maximum of 37°C (99°F). July is also much wetter, experiencing an average rainfall of 171 mm (6.7 in) over approximately 23 days, accompanied by higher humidity levels at 85%. For a detailed look at July weather patterns in Nanjing, check out Nanjing weather in July.
In December, the weather is much milder with temperatures ranging from a comfortable minimum of 7°C (45°F) to a pleasant average of 17°C (63°F), peaking at 29°C (84°F). This month experiences less precipitation, averaging just 33 mm (1.3 in) over about four days, and the humidity sits at 75%. In contrast, August brings significantly warmer conditions, with temperatures starting at a minimum of 24°C (76°F) and averaging around 29°C (84°F), reaching up to a sweltering 37°C (99°F). The month is also much wetter, receiving 278 mm (10.9 in) of rain over 25 days, and the humidity rises slightly to 83%. For more insights on the weather in August, check out Nanjing weather in August.
December and September showcase contrasting weather patterns. In December, temperatures range from a mild minimum of 7°C (45°F) to a comfortable maximum of 29°C (84°F), with an average of 17°C (63°F). The month experiences relatively low precipitation at 33 mm (1.3 in) over just four days, alongside a humidity level of 75%. In contrast, September boasts higher temperatures, with a minimum of 21°C (70°F) and a maximum reaching 35°C (96°F), while maintaining an average of 28°C (82°F). However, it experiences much more rainfall, totaling 151 mm (5.9 in) across 18 days, with a slightly lower humidity of 71%. For more details on September weather in Nanjing, you can visit Nanjing weather in September.
In comparing the weather between December and October, we see notable differences in temperature, precipitation, and overall humidity. December experiences milder temperatures, with a minimum of 7°C (45°F) and an average of 17°C (63°F), peaking at 29°C (84°F). In contrast, October is significantly warmer, featuring a minimum of 14°C (58°F) and an average of 25°C (77°F), reaching highs of 35°C (96°F). Precipitation levels also differ, as December has 33 mm (1.3 in) of rain over four days, while October sees much higher rainfall at 98 mm (3.9 in) over seven days. Humidity is slightly higher in December at 75%, compared to October's 70%. For more details, you can check Nanjing weather in October.
In comparing the weather of December to November, December experiences slightly cooler temperatures, with a minimum of 7°C (45°F) compared to November's minimum of 12°C (53°F). The average temperature also drops from 21°C (70°F) in November to 17°C (63°F) in December, while the maximum temperature remains relatively similar, with December peaking at 29°C (84°F) against November's 31°C (88°F). Precipitation is slightly lower in December, with 33 mm (1.3 in) over four days, compared to more rain in November with 39 mm (1.5 in) over three days. Humidity levels are comparable, with December at 75% and November at 72%. For a more detailed look at November weather, check out Nanjing weather in November.
As December settles in Nanjing, the weather experiences a noticeable shift compared to the warmer months. The days become cooler, with average temperatures hovering around a comfortable level, while brisk evenings remind residents of the approaching winter. With moderate precipitation and a relatively high humidity level, this month is also characterized by occasional rain, which adds a refreshing touch to the crisp air. While some may seek warmer escapes during this time, December’s charm lies in its serene atmosphere, making it a perfect month to explore the city's rich cultural heritage. To discover more about Nanjing's climate throughout the year, visit Nanjing Climate.