Last updated: August 21, 2025
December in Jiangnan, China presents a unique blend of crisp winter air and occasional rainfall. With daytime temperatures peaking at 25°C (78°F) and dipping to a refreshing 5°C (41°F) at night, the month offers a comfortable yet variable climate. The average temperature hovers around 13°C (56°F), making it ideal for light layering. This period experiences 46 mm (1.8 in) of precipitation over 9 days, contributing to a humid atmosphere with a notable 80% humidity level. Whether exploring scenic landscapes or enjoying cozy indoor activities, December in Jiangnan is a captivating experience for visitors and locals alike.
In December, Jiangnan, China, experiences a noticeable drop in temperatures as winter sets in. The minimum temperature hovers around 5°C (41°F), while the average reaches a chilly 13°C (56°F), and the maximum can still reach up to 25°C (78°F) on milder days. This month marks a transition from the comforting mildness of autumn to the cooler embrace of winter, with December's temperatures reflecting a consistent dip from the warmer months. The gradual cooling trend is evident, as the region moves from the pleasant autumn averages towards the much colder conditions that characterize January. As such, December serves as a bridge, reminding residents and visitors alike to prepare for the colder days ahead.
In Jiangnan, China, December marks the onset of a drier period, with precipitation amounting to only 46 mm (1.8 in) over the month. This significant drop follows the torrential rains typical of the summer and early autumn months, where June and August remarkably recorded 302 mm (11.9 in) and 300 mm (11.8 in), respectively. The trend towards reduced precipitation is evident, as December experiences just 9 rainy days, mirroring the patterns of January and November. This decrease highlights a shift toward winter, inviting cooler and relatively calmer weather that marks the region's seasonal transition.
In Jiangnan, China, December brings a notable humidity level of 80%, marking a slight decrease from the peak summer months while remaining significantly high. The trend reveals a gradual increase in humidity from 66% in January to a peak of 88% in July, before tapering off in the autumn months. As winter sets in, the humidity dips slightly; however, December still retains the characteristic moisture that defines this region throughout much of the year. The year-round fluctuations reflect the climate's influence on local agriculture and lifestyle, with December's humidity hinting at the cooler and wetter winter months.
In December, Jiangnan experiences a notable decrease in UV Index levels, dropping to 6, which correlates with a high exposure category. This signifies a more manageable environment for outdoor activities, offering a burn time of 25 minutes—double that of the peak summer months. As the year winds down, the trend reflects a gradual decline from the extreme UV conditions of the summer months, with January also maintaining a similar level at 6. This seasonal shift underscores the importance of adapting sun safety practices. For detailed information on UV levels throughout the year, explore Jiangnan UV Index.
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In Jiangnan, China, December ushers in a gentle decline in sunlight, with an average of 204 hours lighting up the landscape. This marks a notable drop from the sun-drenched peak of July, which boasts 313 hours, highlighting the region's dramatic seasonal variations. Notably, the sunlit hours remain relatively abundant compared to the earlier months of winter, such as January's 170 hours. As the year progresses from the verdant peak of spring in April with 257 hours to the more muted tones of winter, December’s sunshine serves as a delightful companion to the cozy charm of Jiangnan, creating a serene backdrop as the year draws to a close. Overall, the trend showcases a striking evolution from vibrant summer days to the softer, quieter reflections of winter.
In December, the likelihood of sunny weather in Jiangnan sits at 38%, marking a slight uptick compared to the gloomier months of June and May, which plummet to as low as 5% and 13% respectively. This seasonal trend indicates that as the year winds down, the chances for sunshine begin to rise after the heavy cloud cover of summer. Surprisingly, December's sun probability outperforms the earlier fall months, such as October and November, which hover around 26% and 33%. While not the sunniest month, December offers a modest chance for brighter days, providing some relief before the arrival of winter’s chill.
In Jiangnan, China, December marks a transition back to shorter days, bringing daylight down to 10 hours, mirroring the lengths seen in January and November. This trend showcases the region's distinct seasonal rhythm, where day length gradually increases from just 10 hours in January to a peak of 13 hours during the summer months of May through August. As the year progresses from the vibrant spring of March and April into the cooler months, daylight begins to retreat, setting the stage for a quieter, introspective winter. This cyclical pattern reflects the ebb and flow of time in Jiangnan, intertwining the beauty of its seasonal changes with the daily experience of its inhabitants.
As December arrives in Jiangnan, a noticeable shift occurs in the wind patterns, with an average speed of 3.4 m/s (8 mph), marking a subtle uptick from the previous months. This increase is part of a trend that sees wind speeds rising after a generally calm late summer, where they hover around 2.4 to 2.9 m/s. The winds begin to pick up notably in October, reaching 4.1 m/s (9 mph) before easing slightly in November. The seasonal change brings a refreshing breeze, inviting residents and visitors alike to appreciate the unique beauty of Jiangnan during this time. As the year winds down, the December currents echo a sense of transition—the calm before the winter's chill, blending gently with the serene winter landscape.
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, the weather typically features a minimum temperature of 5°C (41°F) and an average of 13°C (56°F), while reaching a maximum of 25°C (78°F). This month also sees higher humidity levels at 80% and experiences approximately 46 mm (1.8 in) of precipitation over about 9 days. In contrast, January brings cooler temperatures, starting at a minimum of 0°C (33°F) and averaging 11°C (53°F), although it can still reach up to 25°C (78°F). The precipitation increases slightly to 52 mm (2.0 in) but occurs over just 7 days, resulting in a lower humidity of 66%. For more information on specific conditions, you can check Jiangnan weather in January.
In December, the weather tends to be milder with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 25°C (78°F), averaging around 13°C (56°F). This month experiences about 46 mm (1.8 in) of precipitation over 9 days, accompanied by relatively high humidity levels of 80%. In contrast, February sees cooler temperatures with a minimum of 1°C (34°F) and an average of 11°C (52°F), while still reaching up to 25°C (77°F) at its warmest. Precipitation increases significantly to 88 mm (3.5 in) over 10 days, although humidity drops to 71%. For more detailed insight into February weather in Jiangnan, visit Jiangnan weather in February.
December and March display notable differences in weather patterns. In December, temperatures range from a minimum of 5°C to a maximum of 25°C, with an average of 13°C and relatively low precipitation at 46 mm over about 9 days. Humidity is reasonably high at 80%. In contrast, March experiences slightly cooler minimum temperatures at 4°C, but the maximum rises to 27°C, with an average of 14°C. Precipitation significantly increases to 140 mm across 16 days, contributing to higher humidity levels at 81%. This data suggests that March is not only wetter but also retains a mild temperature range, making it a transitional month ahead of spring. For further insights, check out Jiangnan weather in March.
In comparing the weather between December and April, it's evident that April tends to be warmer and wetter. December sees a minimum temperature of 5°C (41°F) and an average of 13°C (56°F), while April boasts a higher minimum of 8°C (47°F) and an average of 18°C (65°F). The maximum temperatures in December reach 25°C (78°F), compared to a warmer 29°C (85°F) in April. Additionally, April experiences significantly more precipitation, with 106 mm (4.2 in) over 12 days, compared to December's 46 mm (1.8 in) across 9 days. The humidity is slightly higher in April at 84% compared to December's 80%. For more detailed information about conditions specifically in Jiangnan during April, you can visit Jiangnan weather in April.
In December, the weather typically features milder temperatures, with a minimum of 5°C (41°F) and an average of 13°C (56°F), making it a cooler month compared to May, where temperatures range from a minimum of 11°C (52°F) to an average of 22°C (72°F). December experiences less precipitation, totaling 46 mm (1.8 in) over around 9 days, contrasted with May, which sees a substantial increase in rainfall at 165 mm (6.5 in) over 16 days. Additionally, humidity levels are slightly lower in December at 80%, compared to May's humidity, which rises to 87%. For a more detailed look at the weather in May, you can check Jiangnan weather in May.
December and June present strikingly different weather patterns. In December, temperatures range from a minimum of 5°C (41°F) to a maximum of 25°C (78°F), with an average of 13°C (56°F). The month sees moderate precipitation, totaling 46 mm (1.8 in) over about 9 days, and humidity levels are relatively high at 80%. In contrast, June experiences much warmer temperatures, with a minimum of 18°C (65°F), an average of 26°C (78°F), and a peak of 35°C (94°F). Rainfall significantly increases in June, amounting to 302 mm (11.9 in) spread over 20 days, and humidity rises slightly to 84%. For more detailed insights on Jiangnan's climate during this month, check Jiangnan weather in June.
In December, the weather offers a milder climate with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 25°C (78°F) and an average of 13°C (56°F). The month sees an average precipitation of 46 mm (1.8 in) over about 9 days, accompanied by a humidity level of 80%. In contrast, July experiences a much warmer environment, with temperatures fluctuating between a minimum of 23°C (74°F) and a maximum of 36°C (97°F), averaging around 28°C (83°F). The precipitation in July is considerably higher at 127 mm (5.0 in), spread across 15 days, and the humidity rises to 88%. For more detailed insights about July weather, you can visit Jiangnan weather in July.
December and August present stark contrasts in weather conditions. In December, temperatures range from a mild 5°C (41°F) at night to a pleasant average of 13°C (56°F) during the day, peaking at a comfortable 25°C (78°F). The month sees moderate rainfall, with about 46 mm (1.8 in) spread over 9 days and humidity at a steady 80%. In sharp contrast, August boasts significantly higher temperatures, starting from a minimum of 24°C (75°F) and averaging around 28°C (82°F), with peak temperatures reaching as high as 35°C (96°F). Rainfall is substantially greater in August, totaling 300 mm (11.8 in) across 22 days, accompanied by slightly higher humidity of 85%. For more details on August weather, you can refer to Jiangnan weather in August.
In December, the weather is markedly cooler, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 25°C (78°F) and an average of 13°C (56°F). In contrast, September boasts much warmer temperatures, with a minimum of 19°C (66°F), an average of 26°C (80°F), and a high of 36°C (97°F). Additionally, September experiences significantly higher precipitation, totaling 94 mm (3.7 in) over 15 days, compared to December's 46 mm (1.8 in) across 9 days. Furthermore, December has a higher humidity level at 80%, whereas September has a more comfortable humidity of 67%. For more detailed insights into September weather, check out Jiangnan weather in September.
In comparing the weather of December and October, it's evident that October tends to be warmer overall, with average temperatures ranging from a minimum of 13°C (55°F) to a maximum of 33°C (92°F). In contrast, December experiences a cooler range, with minimum temperatures dropping to 5°C (41°F) and maximums reaching only 25°C (78°F). Additionally, October sees higher average humidity levels at 72%, compared to December's 80%. There's also more precipitation in October, totaling 69 mm (2.7 in) over 10 days, while December's precipitation amounts to 46 mm (1.8 in) over 9 days. For more details on October weather, you can visit Jiangnan weather in October.
December weather exhibits cooler temperatures compared to November, with a minimum of 5°C (41°F) and an average high of 25°C (78°F), while November enjoys milder conditions with a minimum of 9°C (48°F) and a maximum of 29°C (84°F). Precipitation also differs, as December experiences 46 mm (1.8 in) of rain over 9 days, whereas November sees a higher total of 75 mm (3.0 in) across the same number of days. Humidity remains relatively stable, slightly increasing in December to 80% from November's 77%. For a more detailed look at November weather in this region, visit Jiangnan weather in November.
As December settles in Jiangnan, the weather transforms into a cooler, more humid experience compared to the milder autumn months. With temperatures averaging around 13°C (56°F), the city embraces a crispness that invigorates the atmosphere. Unlike the rain-soaked summer, December sees a moderate amount of precipitation, bringing about 46 mm over approximately 9 days, making it a wet but refreshing time of year. The increased humidity, hovering around 80%, adds a chill to the air, setting the stage for cozy gatherings and festive celebrations. This distinct blend of cooler temperatures and moisture makes December a unique chapter in Jiangnan's climatic story, contrasting sharply with the warmth of preceding months. For a deeper dive into the seasonal variations of this enchanting region, explore the full details at Jiangnan Climate.