Last updated: August 21, 2025
December in Jiangnan, China brings a cool, crisp ambiance as temperatures range from a maximum of 18°C (64°F) to a minimum of 0°C (32°F), with an average temperature settled around 9°C (49°F). This month features moderate precipitation, totaling 29 mm (1.1 in) over approximately 8 days, creating a humid atmosphere with an average humidity level of 81%. Visitors can expect chilly breezes and occasional rainfall, making it a reflective time to experience the unique charm of Jiangnan's winter landscape.
In December, Jiangnan, China starts to feel the chill of winter, with temperatures dipping to a minimum of 0°C (32°F). The average temperature settles at 9°C (49°F), providing a brisk but bearable climate as the year draws to a close. The highs reach up to 18°C (64°F), showcasing a significant drop from the balmy summer months. This time of year marks a transition, with temperatures beginning to mirror the colder winter ahead, as the region prepares for the more frigid January. Overall, December's temperatures reflect a steady cooling trend, making it a cozy and picturesque time for both locals and visitors to experience the unique charm of Jiangnan.
In December, Jiangnan, China experiences a notable decline in precipitation, with a modest total of 29 mm (1.1 in), marking one of the driest months as the year comes to an end. Rainfall occurs over just 8 days, reflecting a significant decrease from the wetter months preceding it. This trend follows the peak of precipitation seen in the spring and early summer, particularly in May, which boasts a robust 186 mm (7.3 in). The transition from the lush, rain-filled months of the year towards December's relative dryness signals a shift in the local climate, setting the stage for the colder winter season ahead. As Jiangnan wraps up the year, its weather patterns clearly illustrate the ebb and flow of precipitation that defines the region.
In December, Jiangnan, China, experiences a relative humidity of 81%, which showcases a slight decrease from the peak of 87% in August and the elevated levels seen in November at 86%. This month marks a transition as the humidity gradually tapers off following the summer's peak, yet still maintains a level characteristic of winter in this region. The overall trend indicates a steady rise in humidity from January through August, peaking mid-summer, before settling into a more moderate range in the cooler months. The pattern suggests that while December is cooler, the humidity remains notably high relative to the chilly winter climate, ensuring that moisture continues to linger in the air as the year draws to a close.
In December, Jiangnan experiences a moderate UV Index of 4, signifying a welcome decrease in sun intensity as the year closes. This marks a contrast to the extreme levels seen during the peak summer months of May through July, when the UV Index soared to 11 and 12, triggering burn times as low as 10 minutes. As autumn transitions into winter, the risk of sunburn becomes less imminent, allowing for safer outdoor activities with a burn time of 30 minutes. This trend of declining UV exposure continues from November, where a high index of 6 reminded residents to be cautious. For more details on the UV Index trends and seasonal safety tips, visit Jiangnan UV Index.
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In Jiangnan, China, the sunshine undergoes a remarkable transformation throughout the year, with December receiving 122 hours of daylight, marking the tail end of a gradually tapering trend following a peak in the summer months. After basking in 313 hours in August, the sun retreats as autumn arrives, bringing October and November down to 141 and 148 hours, respectively. By December, the soft glow of winter envelops the region, contrasting the vibrant luminosity observed in late spring, where May showcases 243 hours of sunshine. This monthly rhythm highlights a dynamic interplay of seasons, with each passing month weaving its unique tapestry of light, culminating in a serene yet more muted December.
In December, the likelihood of sunny weather in Jiangnan, China, stands at 24%, indicating a relatively modest chance for sunshine. This figure aligns closely with the trend seen in the preceding months of November and October, which recorded 24% and 20% respectively. Interestingly, December's sun probability is notably higher than the dips observed during the spring and early summer, such as April's mere 15% and June's 14%. As the year winds down, the chance of enjoying a bright day remains comparable to the winter months of January and July, both at 31%, suggesting that while the sun may be shy, it's certainly not out of reach for those in Jiangnan.
In Jiangnan, China, December marks a return to shorter days, with 10 hours of daylight that mirrors the daylight seen in January and November. As the year transitions from the vibrant long days of summer in June, with a peak of 14 hours, daylight gradually diminishes. The trend is clear: after the radiant spring and summer months—where daylight stretches to its fullest—daylight begins to taper off in the fall, settling into consistent shorter days by winter. While December may bring less sunshine, it offers a serene charm, framing the landscape in soft light as the region prepares for the new year ahead.
As December arrives in Jiangnan, the gentle caress of the wind continues to evoke a sense of tranquility, with an average speed of 1.3 m/s (3 mph). This steady, soft breeze mirrors the subtle transitions observed throughout the year, where wind speeds have generally hovered between a modest 1.3 m/s and 1.9 m/s. Notably, the wind's velocity peaked in September, hinting at the region's dynamic seasonal shifts, yet the winter months tend to embrace a calmness, gradually settling into the quieter rhythms of the colder season. With little fluctuation since November, December's breezes symbolize a harmonious close to the year, inviting both reflection and anticipation of the beauty that each upcoming season holds.
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.
December and January showcase slightly contrasting weather patterns. In December, temperatures range from a minimum of 0°C (32°F) to a maximum of 18°C (64°F), with an average of 9°C (49°F). The month sees around 29 mm (1.1 in) of precipitation over 8 days, coupled with a high humidity of 81%. In contrast, January experiences cooler temperatures, with lows dropping to -2°C (30°F) and an average of 8°C (47°F), reaching a high of 17°C (63°F). The precipitation remains similar at 30 mm (1.2 in) across 8 days, though humidity decreases to 72%. For more detailed insights on January weather, check out Jiangnan weather in January.
In December, the weather typically sees a minimum temperature of 0°C (32°F), with an average of 9°C (49°F) and a maximum of 18°C (64°F). Precipitation during this month is relatively low, totaling 29 mm (1.1 in) over about 8 days, coupled with humidity levels around 81%. In contrast, February experiences slightly milder temperatures, with a minimum of 1°C (34°F), an average of 10°C (50°F), and a high of up to 25°C (78°F). However, it also sees increased precipitation, averaging 47 mm (1.9 in) across 9 days, along with slightly lower humidity at 76%. For a more detailed look at February weather in Jiangnan, you can visit Jiangnan weather in February.
In December, temperatures in Jiangnan range from a chilly 0°C (32°F) at night to a mild 18°C (64°F) during the day, with an average temperature of around 9°C (49°F). The month experiences relatively low precipitation, totaling 29 mm (1.1 inches) over about 8 rainy days, and humidity remains quite high at 81%. In contrast, March sees a significant warming trend, with minimum temperatures rising to 6°C (42°F) and daytime highs reaching up to 32°C (90°F), resulting in an average temperature of 15°C (59°F). However, this increase in warmth comes with more precipitation, totaling 101 mm (4.0 inches) over approximately 15 days, while humidity remains consistent at 80%. For more information, visit Jiangnan weather in March.
December weather is considerably cooler, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 18°C (64°F), along with higher humidity at 81%. In contrast, April showcases a significant warm-up, with temperatures starting at 8°C (46°F) and soaring to 34°C (94°F), while the humidity slightly decreases to 77%. Precipitation also differs notably: December experiences 29 mm (1.1 in) of rain over 8 days, whereas April sees a substantial increase to 139 mm (5.5 in) spread across 14 days. For more detailed insights, you can check Jiangnan weather in April.
The weather in December is noticeably cooler, with average temperatures ranging from a chilly 0°C (32°F) at night to a mild 18°C (64°F) during the day. This month experiences relatively low precipitation, with only 29 mm (1.1 in) over approximately 8 rainy days and a humidity level of 81%. In contrast, May brings a significant rise in temperatures, with nighttime lows of 12°C (54°F) and daytime highs soaring to 36°C (97°F), resulting in an average temperature of 22°C (71°F). Rainfall in May is considerably heavier, reaching 186 mm (7.3 in) over 19 days, while humidity remains slightly higher at 82%. For a detailed look at the weather in May, you can refer to this link: Jiangnan weather in May.
December and June present a stark contrast in weather conditions. In December, temperatures range from a chilly 0°C (32°F) to a mild 18°C (64°F), with an average of 9°C (49°F). Precipitation is relatively low at 29 mm (1.1 in), occurring on about 8 days, and the humidity stands at 81%. In contrast, June boasts much warmer temperatures, peaking between 16°C (62°F) and a sweltering 36°C (96°F), with an average of 25°C (77°F). This month sees a significant increase in precipitation, totaling 151 mm (6.0 in) over approximately 16 days, while humidity rises slightly to 85%. For a more detailed understanding of the atmospheric conditions, check out the specifics on Jiangnan weather in June.
December and July present strikingly different weather conditions. In December, temperatures are quite cool, with a minimum of 0°C (32°F) and an average of 9°C (49°F), peaking at 18°C (64°F). The month sees low levels of precipitation at 29 mm (1.1 in) across 8 days, accompanied by a relative humidity of 81%. In contrast, July boasts much warmer weather, with temperatures ranging from a minimum of 21°C (70°F) to a scorching maximum of 39°C (103°F) and an average of 28°C (83°F). It's also much wetter during this month, receiving 184 mm (7.3 in) of rain over 16 days, coupled with slightly higher humidity at 85%. For more detailed information about the rainfall and temperatures during this summer month, you can visit Jiangnan weather in July.
December and August present starkly contrasting weather conditions. In December, temperatures range from a chilly 0°C (32°F) at night to a mild 18°C (64°F) during the day, with an average of 9°C (49°F). The month sees about 29 mm (1.1 in) of precipitation over 8 rainy days, accompanied by a relatively high humidity level of 81%. In contrast, August basks in warmth, with nighttime temperatures rarely dropping below 19°C (67°F) and daytime highs soaring up to 40°C (104°F). This month experiences significant rainfall, averaging 138 mm (5.4 in) over 13 days, and a slightly higher humidity of 87%. For more details about August weather, you can check Jiangnan weather in August.
December and September present stark contrasts in weather. In December, temperatures range from a chilly minimum of 0°C (32°F) to a mild maximum of 18°C (64°F), with an average of 9°C (49°F). Precipitation is relatively low at 29 mm (1.1 in) over about 8 days, accompanied by a humidity level of 81%. On the other hand, September boasts warmer temperatures, with a minimum of 17°C (62°F) and a maximum that can soar up to 37°C (100°F), averaging around 24°C (75°F). However, it is also much wetter in September, with total precipitation reaching 179 mm (7.0 in) across 16 days and a slightly higher humidity of 84%. For more information about the weather in September, you can visit Jiangnan weather in September.
When comparing the weather in December and October, notable differences emerge. In December, temperatures range from a chilly minimum of 0°C (32°F) to a maximum of 18°C (64°F), resulting in a cool average of 9°C (49°F). In contrast, October boasts a much warmer climate, with temperatures oscillating between a minimum of 9°C (49°F) and a scorching maximum of 35°C (96°F), leading to an average temperature of 18°C (65°F). Additionally, precipitation is significantly higher in October, with 118 mm (4.6 in) over 15 days, compared to just 29 mm (1.1 in) over 8 days in December. Despite both months sharing the same humidity level of 81%, October's overall weather is much more vibrant and variable. For a closer look at October weather in Jiangnan, you can visit Jiangnan weather in October.
In December, the weather generally becomes cooler compared to November, with average temperatures dropping from about 13°C (56°F) in November to around 9°C (49°F) in December. The maximum temperature in December peaks at 18°C (64°F), which is significantly lower than November’s high of 26°C (79°F). Additionally, December experiences less precipitation, with 29 mm (1.1 in) over 8 days, compared to November's 60 mm (2.4 in) spread over 12 days. However, humidity remains relatively high in both months, at 81% in December and slightly higher at 86% in November. For a more detailed look at November's weather patterns, check out Jiangnan weather in November.
As December rolls into Jiangnan, the weather takes a noticeable turn towards cooler temperatures, with a shift from the milder tranquility of previous months. While the maximum temperature dips to a refreshing 18°C (64°F), the average temperature settles around a brisk 9°C (49°F), with minimums occasionally touching cold ground at 0°C (32°F). High humidity levels at 81% add a crispness to the air, and occasional rainfalls, totaling about 29 mm across 8 precipitation days, bring a sense of freshness to the landscape. This month marks the transition to winter, serving as a reminder of the season’s embrace, distinct from the warmth of autumn. For a deeper insight into the climate characteristics of the region, explore the full details at Jiangnan Climate.