Last updated: August 21, 2025
In Changshu, China, December ushers in a cool yet moderately pleasant climate, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 21°C (70°F). The average temperature sits around 7°C (45°F), making it essential to bundle up for those chilly days. This month typically witnesses about 42 mm (1.6 in) of precipitation over approximately 8 days, contributing to a humidity level of 77%. Whether exploring the city's vibrant culture or enjoying the serene winter landscapes, December in Changshu promises a unique experience characterized by crisp air and occasional rain.
As December settles in Changshu, China, temperatures start to dip, hinting at the arrival of winter. The month opens with a minimum of -6°C (21°F), a stark contrast to the milder conditions of November. However, the average temperature climbs to a cool 7°C (45°F), reaching a peak of 21°C (70°F) on the warmest days. This trend illustrates a gradual decline toward winter, while still offering brief glimpses of warmth reminiscent of autumn. With the transition from the year, December presents a unique blend of frosty mornings and relatively mild afternoons, making it a captivating time to experience the shifting seasons.
In December, Changshu experiences a notable shift in its precipitation patterns, characterised by a slight decline in rainfall. With an average of 42 mm (1.6 in) spread over 8 days, this month typically sees the lowest precipitation levels of the year. This decrease is a continuation of the trend observed from the more intense rainfalls of the summer months, such as July's peak of 256 mm (10.1 in). The transition into winter brings more stable weather conditions, but December, unlike its neighboring months, still offers a moderate amount of moisture, suggesting a gradual end to the wetter season. The overall trend highlights the region's dynamic climate, where rainfall diminishes as temperatures drop, paving the way for the dry winter months ahead.
As December arrives in Changshu, China, the humidity levels settle at 77%, marking a slight decline from the high summer months but remaining noticeably elevated compared to the less humid winter season. This month represents a transition, where humidity begins to taper off from the peak levels observed in the sweltering summer, such as July's 93% and August's 91%. Overall, the trend throughout the year indicates a gradual increase in humidity from January's 70% to its summer zenith, before experiencing a gentle but steady decline as the year draws to a close. December weather, therefore, provides a humid yet more temperate environment, offering respite before the drier winter months of January and February arrive.
In December, the UV Index in Changshu, China, drops to 4, placing it in the moderate exposure category with a burn time of approximately 30 minutes. This marks a notable decline from the extreme levels seen during the summer months of June, July, and August, where indexes peaked at 11 and burn times fell to just 10 minutes. As the year progresses, the UV Index exhibits a gradual increase from 5 in January to its peak during the warmer months, followed by a gentle decline as winter approaches. December's more manageable levels invite residents to enjoy the outdoors while still remaining mindful of sun exposure. For more detailed information, visit Changshu UV Index.
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In December, the sun graces Changshu, China with a gentle luminosity, offering around 214 hours of sunshine. While this is a slight dip from the vibrant December afternoons of previous months, when sunlight peaks at nearly 307 hours in August, it still reflects the city's charming winter ambiance. The trend throughout the year showcases a gradual increase in daylight, peaking in the summer months, which bless Changshu with long, sunlit days. As the year winds down, the transition into winter brings shorter days, yet December’s sunshine still provides a glimmer of warmth against the chill, reminding locals of the beauty that each season holds.
In December, Changshu, China, revels in an impressive 67% chance of sunny weather, marking a notable increase from the previous months. This trend of increasing sunlight begins in November, where the probability sits at 59%, and rises even further as the year draws to a close. Interestingly, despite the colder temperatures typical of winter, December defies the seasonal norm by offering more sunny days than earlier months like April, May, and even September. This makes it an ideal time for outdoor activities as residents and visitors alike can enjoy the crisp air under bright skies, showcasing a refreshing contrast to the gray clouds often associated with winter.
In Changshu, China, the rhythm of daylight duration ebbs and flows throughout the year, painting a vivid tapestry of seasonal change. As December arrives, the city experiences 10 hours of daylight, echoing the shorter days of January and November. However, the month before winter's chill shows a distinctive contrast, with spring's arrival in March bringing 11 hours of light. The longest days eclipse in June, where 14 hours of sunlight flood the landscape, marking the peak of summer. Following this burst of brightness, daylight gradually retreats, settling into a comfortable but brief 12 hours in September and tapering off once again to 10 hours by the year's end. This cyclical pattern not only highlights the changing seasons but also the rich natural beauty and diversity of Changshu throughout the year.
As December settles over Changshu, China, the wind begins to whisper its softer tunes, with an average speed of 2.9 m/s (approximately 6 mph). This gentle breeze marks a notable shift from the stronger gusts of July, which recorded a peak of 4.2 m/s (9 mph). Throughout the year, wind patterns fluctuate, but December’s calming presence aligns with the overall trend of reduced wind speeds during the winter months. Unlike the brisk air of the earlier year's end, December's winds invite a more tranquil atmosphere, perfect for cozy gatherings and serene walks. As the colder months embrace the region, the subtle wind serves as a gentle reminder of nature's rhythm, offering a peaceful close to the year.
Weather in Changshu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Changshu, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January in Changshu exhibit notable differences in weather patterns. In December, temperatures fluctuate more dramatically, with a minimum of -6°C (21°F), an average of 7°C (45°F), and a maximum of 21°C (70°F). The month also sees an average precipitation of 42 mm (1.6 in), experienced over 8 days, and maintains a high humidity level of 77%. In contrast, January is slightly cooler, with a minimum of -8°C (18°F) and an average of 5°C (41°F), reaching a maximum of 20°C (67°F). Precipitation increases to 54 mm (2.1 in) over 7 days, but humidity drops to 70%. For a detailed overview of January weather patterns, visit Changshu weather in January.
In December, temperatures typically range from a chilly minimum of -6°C (21°F) to a pleasant maximum of 21°C (70°F), with an average of around 7°C (45°F). The month experiences a fair amount of precipitation, totaling 42 mm (1.6 in) over about 8 days, and the humidity averages around 77%.
In contrast, February sees slightly milder weather, with temperatures ranging from -5°C (23°F) to a maximum of 25°C (78°F) and an average of 6°C (44°F). Precipitation increases to 56 mm (2.2 in) over 9 days, but humidity is a bit lower at 73%. For more detailed weather insights, you can check Changshu weather in February.
In comparing the weather between December and March, December features cooler temperatures with a minimum of -6°C (21°F) and an average of 7°C (45°F), while March brings a noticeable increase with a minimum of 0°C (33°F) and an average of 12°C (53°F). The maximum temperatures in December reach up to 21°C (70°F), whereas March sees even higher highs, peaking at 28°C (83°F). Additionally, March experiences more precipitation at 68 mm (2.7 in) over 11 days compared to December's 42 mm (1.6 in) over 8 days, and slightly higher humidity at 81% versus December's 77%. For more specific details on March weather, visit Changshu weather in March.
December and April exhibit notable differences in weather conditions. In December, temperatures range from a chilly minimum of -6°C (21°F) to a comfortable maximum of 21°C (70°F), with an average of 7°C (45°F). The month experiences around 42 mm (1.6 in) of precipitation over 8 days, accompanied by a humidity level of 77%. In contrast, April brings much milder weather, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 32°C (90°F), averaging 16°C (61°F). The precipitation during April is higher, totaling 73 mm (2.9 in) over the same duration of 8 days, and the humidity slightly increases to 87%. For more detailed weather information, you can check Changshu weather in April.
December and May present stark contrasts in weather. In December, temperatures range from a chilly minimum of -6°C (21°F) to a mild maximum of 21°C (70°F), with an average of 7°C (45°F). The month often experiences precipitation on around 8 days, totaling 42 mm (1.6 in), accompanied by a humidity level of 77%. In comparison, May boasts much warmer temperatures, with a minimum of 10°C (50°F) and a maximum climbing to 37°C (99°F), averaging 22°C (71°F). Rainfall also increases in May, with 120 mm (4.7 in) over approximately 10 days, resulting in a higher humidity of 87%. For more details on the weather during this vibrant month, visit Changshu weather in May.
December and June present striking contrasts in weather conditions. In December, temperatures range from a chilly minimum of -6°C (21°F) to a comfortable maximum of 21°C (70°F), with an average of 7°C (45°F). The month typically sees about 42 mm (1.6 inches) of precipitation over 8 days and humidity levels at around 77%. In contrast, June experiences much warmer temperatures, with minimums at 17°C (62°F) and maximums soaring up to 38°C (100°F), averaging around 25°C (77°F). The summer month is considerably wetter, with precipitation totaling 161 mm (6.3 inches) over approximately 12 days and humidity peaking at 89%. For a detailed look at June's weather, visit Changshu weather in June.
December and July present vastly different weather patterns. In December, temperatures range from a chilly minimum of -6°C (21°F) to a maximum of 21°C (70°F), with an average of 7°C (45°F). The month experiences moderate precipitation of 42 mm (1.6 in) over about 8 days, accompanied by a relatively high humidity of 77%. In contrast, July brings much warmer conditions, with temperatures ranging from a minimum of 19°C (66°F) to a scorching maximum of 42°C (108°F), averaging 29°C (84°F). The summer month is significantly wetter, recording 256 mm (10.1 in) of precipitation across 16 days and higher humidity levels at 93%. For more detailed information about July weather, you can visit Changshu weather in July.
December and August present stark contrasts in weather. December features cooler temperatures, with a minimum of -6°C (21°F) and an average of 7°C (45°F), making it a chilly month. Despite a moderate amount of precipitation at 42 mm (1.6 in) over 8 days, humidity remains relatively high at 77%. In contrast, August boasts significantly warmer conditions, with temperatures ranging from a minimum of 21°C (70°F) to a scorching maximum of 40°C (104°F) and an average of 29°C (85°F). This summer month sees a much higher precipitation level of 154 mm (6.1 in) spread across 14 days, accompanied by elevated humidity at 91%. For more details on August weather, you can refer to Changshu weather in August.
In December, the weather is much cooler, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 21°C (70°F) and an average of 7°C (45°F). Precipitation is relatively low at 42 mm (1.6 in) across about 8 days of the month, and humidity sits at 77%. In contrast, September is significantly warmer, with temperatures varying from a minimum of 15°C (59°F) to a maximum of 35°C (95°F) and an average of 25°C (77°F). It also experiences more rainfall, totaling 134 mm (5.3 in) over 12 days, with humidity slightly higher at 81%. For a closer look at September's conditions, visit Changshu weather in September.
In December, temperatures range more widely, with a minimum of -6°C (21°F) and a maximum of 21°C (70°F), resulting in an average temperature of 7°C (45°F). In contrast, October enjoys milder weather, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 33°C (91°F) and an average of 19°C (66°F). Both months experience similar precipitation levels, with December receiving 42 mm (1.6 in) over 8 days and October slightly higher at 46 mm (1.8 in) over 7 days. Humidity is relatively consistent, reaching 77% in December compared to 80% in October, making October generally feel warmer and more comfortable. For more detailed information, you can visit Changshu weather in October.
December and November in Changshu present distinct weather patterns. In December, temperatures range from a chilly minimum of -6°C (21°F) to a mild maximum of 21°C (70°F), with an average temperature of 7°C (45°F). In contrast, November showcases milder conditions, featuring minimums around 1°C (34°F) and maximums peaking at 28°C (84°F), with an average of 14°C (57°F). Both months experience comparable precipitation levels, with December recording 42 mm (1.6 in) over 8 days and November slightly higher at 44 mm (1.7 in) across just 6 days. Humidity remains relatively high in both months, but November is slightly more humid at 82% compared to December’s 77%. For more detailed insights on November weather, refer to Changshu weather in November.
As December sets in, Changshu experiences a notable shift in weather, moving from the gentle warmth of autumn to the crisp chill of winter. The temperatures dip on average, with colder nights that can reach down to frigid levels. While the days may still flirt with mild highs, the increased humidity at 77% and nearly a week of precipitation create a rather damp atmosphere. This combination of cooler weather and frequent showers marks a distinct transition, setting December apart from the milder months before it. For a deeper dive into the city's climatic nuances, be sure to visit Changshu Climate.