Last updated: August 21, 2025
In Jiangnan, China, December presents a diverse climate marked by a maximum temperature of 25°C (78°F) and an average of 9°C (49°F). Temperatures can drop to a minimum of -2°C (29°F), creating a chilly atmosphere. The month sees around 62 mm (2.5 in) of precipitation spread over 9 days, contributing to the region's 78% humidity. This combination of warmth, cold snaps, and occasional rain makes December a dynamic month, perfect for exploring Jiangnan's winter charm while dressing in layers for comfort.
As December arrives in Jiangnan, China, the temperatures begin to exhibit a noticeable shift toward winter. The month typically sees a minimum of -2°C (29°F), hovering around an average of 9°C (49°F), and peaking at a maximum of 25°C (78°F). Compared to November's mild average of 15°C (60°F), December introduces a chill but still offers a wide temperature range that can surprise visitors with warmer afternoons. This transitional period marks a significant dip from the balmy heights of summer, as the region prepares for the colder months ahead while still enjoying occasional mild days. With clear signs of winter setting in, December invites a blend of cozy indoor activities and brisk outdoor explorations, striking a charming balance in Jiangnan’s climate.
In December, Jiangnan experiences a modest decline in precipitation, recording 62 mm (2.5 in) of rain over approximately 9 days. This reduction continues the trend observed since the peak of the rainy season in June, which sees a remarkable 286 mm (11.3 in). As the year draws to a close, rainfall gradually tapers from the high levels of late spring and summer months, with December capturing the cooler, drier essence of winter. Interestingly, although precipitation levels during this month are lower than those in the preceding months, they remain consistent with the overall patterns observed in early winter, when the region typically experiences a blended rhythm of wet and dry days.
In Jiangnan, China, December marks a notable shift in humidity as the year approaches its end. With an average humidity of 78%, it subtly dips from the more oppressive figures of summer, when July peaks at 91%. Following a significant climb from January's 65%, the humidity steadily rises through the spring months, reaching a high of 87% in both May and June. As autumn settles in, September and October show a dip toward 72% and 74%, respectively, before December strikes a balance. This month offers a reprieve from the intense humidity of the preceding summer while still retaining a notable level of moisture, reflecting the region's characteristic wet climate.
As the year comes to a close, December in Jiangnan, China showcases a notable drop in the UV Index, which rests at a moderate 5. This marks a shift from the extreme levels experienced during the summer months, where values peaked at 12 from May to September, necessitating caution with a burn time of just 10 minutes. In contrast, December allows for a more comfortable 30 minutes of exposure, making it an ideal time for outdoor activities without intense sun concerns. The gradual decline in UV levels from the preceding months hints at the seasonal transition, providing a balance between sunlight enjoyment and skin safety. For more insights into the UV trends throughout the year, visit Jiangnan UV Index.
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In Jiangnan, China, the December sun casts a warm glow with 203 hours of sunshine, reflecting a significant drop from the peak of 309 hours in August. This month marks a transition as daylight hours begin to decrease following the vibrant summer months, yet December remains pleasantly luminous compared to January's modest 142 hours. As the year unfolds, sunlight gradually increases from early spring, peaking in late spring and summer, while autumn gently ushers in shorter days. The overall trend showcases Jiangnan's charm, where each month’s sunshine holds its own appeal, culminating in a crisp, sunny December that hints at the beauty of the coming year.
In Jiangnan, China, December stands out with a sunny outlook, boasting a remarkable 55% chance of sun. This marks a slight increase compared to the preceding months, where the chances hover around the mid to low 40s. As the year draws to a close, the likelihood of sunshine in December reflects a positive trend, showcasing the region's potential for clear skies during this winter month. In contrast, the summer months suffer from lower chances of sunny weather, particularly in July with a mere 13%. So for those seeking a bit of winter sunshine, December in Jiangnan offers a promising getaway from the gloom of preceding months.
In Jiangnan, China, the daylight duration weaves a compelling narrative throughout the year. Starting from a modest 10 hours in January, the days gradually stretch, peaking at 13 hours during the vibrant summer months of May through August. As autumn sets in, the light begins to wane, reducing to 12 hours in September and 11 hours in October. Notably, December sees daylight return to 10 hours, mirroring the beginning of the year. This rhythmic ebb and flow not only highlights the changing seasons but also encapsulates the subtle beauty of Jiangnan’s climate, inviting reflection and appreciation for each fleeting moment of daylight.
As December unfolds in Jiangnan, the average wind speed remains a gentle 1.8 m/s (4 mph), consistent with the softer breezes felt throughout the earlier months of the winter season. This subtle increase from November's 1.7 m/s reflects a trend of mild wind currents that gently sweep through the region, maintaining a tranquil atmosphere. In contrast, the summer months witness a notable uptick in wind activities, peaking at 2.3 m/s (5 mph) in July, only to surrender to the calmness that characterizes the close of the year. The overall stability in December's winds mirrors the enduring charm of Jiangnan, where picturesque landscapes meet serene climatic conditions, inviting both residents and travelers to savor the beauty of this enchanting season.
Weather in Jiangnan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Jiangnan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures range from a chilly minimum of -2°C (29°F) to a mild maximum of 25°C (78°F), with an average of 9°C (49°F). The month experiences about 62 mm (2.5 in) of precipitation over 9 days, accompanied by higher humidity levels at 78%. In contrast, January sees slightly cooler temperatures with a minimum of -5°C (23°F) and a similar maximum of 25°C (78°F), resulting in an average of 7°C (46°F). Precipitation increases slightly to 67 mm (2.7 in) over 8 days, while humidity drops to 65%. For more detailed insights on January weather, you can visit Jiangnan weather in January.
December and February exhibit similar averages, yet some distinctions define their weather patterns. In December, temperatures range from a minimum of -2°C (29°F) to a maximum of 25°C (78°F), with an average of 9°C (49°F). This month experiences about 62 mm (2.5 in) of precipitation over 9 days, accompanied by a higher humidity level of 78%. In contrast, February sees a slightly lower minimum temperature of -3°C (26°F) and a higher maximum at 27°C (81°F), with an average also around 9°C (48°F). Precipitation increases to 75 mm (2.9 in) across 10 days, though humidity decreases to 71%. Overall, February tends to be a bit wetter and drier in terms of humidity despite having similar temperatures to December. For more detailed insights, check Jiangnan weather in February.
In December, the weather showcases a mild winter climate with average temperatures ranging from a minimum of -2°C (29°F) to a maximum of 25°C (78°F). Precipitation is relatively moderate, at 62 mm (2.5 in) over around 9 days, accompanied by a humidity level of 78%. In contrast, March brings a noticeable shift, featuring warmer temperatures with a minimum of -1°C (31°F) and a peak reaching 31°C (89°F). The month also sees increased rainfall, with 134 mm (5.3 in) of precipitation over approximately 15 days, along with a slightly higher humidity of 81%. This transition from December to March signals a progression towards spring, making it an interesting comparison. For more detailed insights, you can explore Jiangnan weather in March.
December and April showcase significantly different weather patterns. In December, temperatures range from a chilly minimum of -2°C (29°F) to a comfortable maximum of 25°C (78°F), with an average of 9°C (49°F). This month typically experiences 62 mm (2.5 in) of precipitation over about 9 days, accompanied by a relatively high humidity level of 78%. In contrast, April brings a notably warmer climate with temperatures ranging from a minimum of 4°C (39°F) to a peak of 34°C (93°F) and an average of 18°C (65°F). This month sees increased rainfall, totaling 97 mm (3.8 in) spread across approximately 12 days, and an even higher humidity rate of 86%. For more details on the conditions during this month, you can check Jiangnan weather in April.
In December, temperatures in Jiangnan range from a chilly minimum of -2°C (29°F) to a pleasant maximum of 25°C (78°F), with an average of 9°C (49°F). The month experiences moderate precipitation of 62 mm (2.5 in) over 9 days and a humidity level of 78%. In contrast, May brings significantly warmer weather, with temperatures ranging from a minimum of 9°C (49°F) to a scorching maximum of 41°C (107°F) and an average temperature of 23°C (74°F). This month also sees higher precipitation at 189 mm (7.4 in) spread over 14 days, along with increased humidity at 87%. For a closer look at the unique characteristics of Jiangnan's weather in May, visit this link: Jiangnan weather in May.
December and June present contrasting weather patterns in Jiangnan. In December, temperatures range from a chilly minimum of -2°C (29°F) to a mild maximum of 25°C (78°F), with an average of 9°C (49°F). The month sees about 62 mm (2.5 in) of precipitation over 9 days, and humidity levels hover around 78%. In stark contrast, June experiences much warmer conditions, with temperatures starting at a minimum of 15°C (60°F) and soaring up to 38°C (100°F), averaging 25°C (78°F). This month is also significantly wetter, with 286 mm (11.3 in) of rainfall spread across 19 days and humidity rising to 87%. For more details on the weather in June, you can visit Jiangnan weather in June.
December and July present strikingly contrasting weather conditions. In December, temperatures range from a chilly minimum of -2°C (29°F) to a comfortable maximum of 25°C (78°F), with an average of 9°C (49°F). This month experiences a moderate level of precipitation, with about 62 mm (2.5 in) falling over 9 days, and humidity levels are relatively high at 78%.
Conversely, July is characterized by significantly warmer temperatures, with lows around 21°C (70°F) and highs soaring to 41°C (106°F), averaging 29°C (85°F). July is also much wetter, with a substantial 233 mm (9.2 in) of rain occurring over 16 days, contributing to even higher humidity levels of 91%. For more specific details on the weather in July, you can check out this link: Jiangnan weather in July.
When comparing the weather in December and August, the differences are quite striking. December experiences cooler temperatures, with a minimum of -2°C (29°F) and an average of 9°C (49°F), making it significantly chillier than August, where temperatures range from a minimum of 22°C (71°F) to an average of 30°C (87°F). Additionally, August reaches highs of up to 41°C (106°F), far exceeding December's maximum of 25°C (78°F). Precipitation in December totals 62 mm (2.5 in) over 9 days, while August sees a much wetter climate with 136 mm (5.3 in) over 11 days. Furthermore, humidity levels are higher in August at 87%, compared to December's 78%. For more detailed insights, you can refer to Jiangnan weather in August.
December and September exhibit contrasting weather patterns. In December, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant average of 9°C (49°F), with a maximum reaching 25°C (78°F). This month sees about 62 mm (2.5 in) of precipitation over 9 days, accompanied by relatively high humidity at 78%. In stark contrast, September enjoys much warmer temperatures, with a minimum of 16°C (62°F) and an average of 27°C (80°F), peaking at a scorching 39°C (102°F). Additionally, September experiences more rainfall, totaling 90 mm (3.6 in) over 11 days, but with slightly lower humidity at 72%. For more details on September weather, you can visit Jiangnan weather in September.
December's weather is noticeably cooler compared to October, with a minimum temperature that can dip to -2°C (29°F) and an average of 9°C (49°F), whereas October enjoys milder temperatures that range from 9°C (49°F) at night to a maximum of 37°C (98°F) during the day. While both months experience similar amounts of rainfall, December has slightly more precipitation at 62 mm (2.5 in) over 9 days, compared to October's 59 mm (2.3 in) over 7 days. Humidity levels are also higher in December at 78%, compared to 74% in October, contributing to a distinctly different feel to the weather. For a deeper dive into the October climate in this region, you can visit Jiangnan weather in October.
December's weather presents a notable shift compared to November, characterized by cooler temperatures and slightly lower precipitation. While November experiences a milder temperature range with a minimum of 3°C (38°F) and an average of 15°C (60°F), December sees temperatures drop to a minimum of -2°C (29°F) and an average of 9°C (49°F). Moreover, the maximum temperature in December is 25°C (78°F), which is significantly lower than November's peak of 32°C (90°F).
Precipitation levels are relatively similar between the two months, with December recording 62 mm (2.5 in) and November slightly higher at 67 mm (2.6 in), both occurring over 9 days. Humidity remains consistent, hovering around 78% in December and 80% in November, indicating a persistent moistness in the air. For a more detailed exploration, visit Jiangnan weather in November.
As December arrives in Jiangnan, the transition into winter becomes palpable, characterized by a significant drop in temperatures compared to the milder months that precede it. The air turns crisp, with chilly mornings and evenings, while the occasional rainfall adds a touch of moisture, resulting in a humidity level of around 78%. Unlike the balmy days of autumn, December experiences a heightened sense of coolness, making it the perfect time for warm clothing and cozy indoor activities. While the precipitation days may be few, the overall atmosphere is refreshingly invigorating. For a deeper understanding of how December weather shapes the Jiangnan experience, explore the nuances of its climate at Jiangnan Climate.