Last updated: August 21, 2025
In December, China and Japan experience diverse weather patterns characterized by moderate temperatures and significant humidity. The maximum temperature can reach up to 25°C (77°F), while the average temperature hovers around 19°C (67°F), dipping to a minimum of 13°C (56°F). With 135 mm (5.3 in) of precipitation across approximately 15 days, the month showcases a blend of rainy spells and cooler days. Humidity levels are at a notable 75%, making the atmosphere feel quite damp. This unique climate invites an array of seasonal activities and experiences for residents and travelers alike.
In December, temperatures in China and Japan begin to hint at the cooler winds of winter, with minimums averaging around 13°C (56°F). The average temperature reflects a comfortable 19°C (67°F), while maximums can reach up to 25°C (77°F), creating a pleasant ambiance perfect for outdoor activities. Compared to earlier months, December marks a subtle transition from the warmer temperatures that peaked in summer, setting the stage for the chillier months ahead. Notably, the cooling trend observed from November to December signifies a drop of several degrees, enticing locals and travelers alike to enjoy festive celebrations in a crisp atmosphere.
In December, China and Japan experience a notable shift in precipitation patterns, recording an average of 135 mm (5.3 in) of rainfall over 15 days. This marks a slight increase from November's totals, where 112 mm fell over 11 days. December stands out as a month where winter's influence begins to take hold, as the precipitation starts to dwindle compared to the summer months, primarily June's peak of 403 mm over 20 days. Despite the overall decline from the summer highs, December's consistent rainfall helps to maintain the region's lush landscapes, blending the tail end of autumn's moisture with the cooling winter temperatures. As the year concludes, this month highlights the gentle balance between varying climates, setting the stage for colder, drier months ahead.
In December, humidity levels in China and Japan decline to 75%, a notable drop from the peak of 86% reached in both June and July. This cooling trend emerges as the months transition into winter, following a gradual increase that began in January at 71% and peaked in May at 84%. As autumn sets in, November brings a slight decrease to 79% before December's further reduction, indicating a consistent pattern where humidity levels tend to recede as the year closes. The overall trend highlights a significant shift from the heavier, moisture-laden air of summer to the drier, cooler conditions typical of winter, creating a more comfortable atmosphere as the region settles into the end of the year.
As the year progresses, the UV Index in China and Japan showcases a striking trend, particularly peaking from March through September, where it reaches extremes of 11 to 13, necessitating minimal exposure times of just 10 minutes for skin protection. This extreme UV radiation highlights a crucial need for sun safety during the spring and summer months. In contrast, December marks a decline to a UV Index of 6, classified as high, yet still allowing for a longer burn time of 25 minutes. This seasonal variation emphasizes the importance of remaining vigilant about sun exposure year-round, even in the cooler months. For those looking to delve deeper into seasonal UV trends, more information can be found at China UV Index.
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December in both China and Japan marks the transition into winter, bringing with it a significant decrease in sunshine hours as the year draws to a close. With 192 hours of sunlight, December reflects a notable dip from the peak summer months; July and August shine brightly with 315 and 318 hours, respectively. The trend throughout the year reveals a gradual increase in sunlight from the dreary winter months of January and February, culminating in May's high of 298 hours. As autumn sets in, sunlight begins to wane again, leading to December's figures that can often evoke a sense of coziness and introspection as the world prepares for the new year ahead. Through these variations, China and Japan showcase the beautiful ebb and flow of daylight, reminding us of nature's cyclical rhythm.
As December rolls around, the likelihood of sunny weather in China and Japan stands at 31%, reflecting a seasonal trend where sun-kissed days are starting to wane. This percentage is slightly above the 23% chance in January and below November's 36%, suggesting a gradual decline in sunshine as winter takes hold. The months leading up to December exhibit a noticeable increase in sunny days, peaking in September at 58%, before transitioning into the cooler, cloudier months. By December, the balance tips, showcasing the characteristic chill and overcast skies typical of late fall. This trend highlights the shifting patterns of sunlight throughout the year, enriching our understanding of weather dynamics in East Asia.
As December arrives in China and Japan, the daylight duration settles at a modest 10 hours, echoing the pattern of the previous and following months. This month's light reflects a gradual shift towards the winter solstice, where shorter days become a hallmark of the season. Observing the year’s progression, we note a steady increase in daylight from January's 10 hours, peaking at 13 hours in the summer months of May through August. Following this summer peak, daylight diminishes through autumn, highlighting a natural rhythm of light that enhances the seasonal experiences in these countries. December, with its return to 10 hours, serves as a reminder of nature's cycles, inviting reflection during the darkest days of the year.
In December, the winds in China and Japan exhibit a gentle ease, averaging 7.5 m/s (17 mph), continuing a subtle decline from the autumn months. This marks a slight decrease from November's peak of 8.1 m/s, echoing the pattern of wind speeds that generally fluctuate throughout the year. Interestingly, as winter approaches, the winds tend to soften after the brisk late fall, with the highest wind speeds recorded in the early months of the year, particularly in January and October, where they soar to an energetic 8.1 m/s. Overall, the December breeze reflects a seasonal transition, hinting at the calm before the harsher winter gales settle in.
Weather in China varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in China, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather is generally warmer than in January, with average temperatures reaching 19°C (67°F) compared to January's 18°C (64°F). December also experiences slightly higher maximum temperatures of 25°C (77°F), while January peaks at 23°C (74°F). Precipitation is more frequent in December, occurring on 15 days and accumulating 135 mm (5.3 in), whereas January sees reduced rainfall of 105 mm (4.1 in) over 10 days. Additionally, December has a higher humidity level at 75%, compared to January's 71%. For more details on January weather, you can check China weather in January.
In December, the weather is generally warmer with minimum temperatures around 13°C (56°F) and an average of 19°C (67°F), peaking at a maximum of 25°C (77°F). The month is also characterized by higher precipitation, totaling 135 mm (5.3 in) over approximately 15 days, and maintaining a humidity level of 75%.
In contrast, February experiences slightly cooler conditions, with minimum temperatures dipping to 11°C (52°F) and an average of 18°C (64°F), while the maximum temperature reaches 24°C (75°F). Precipitation decreases to 113 mm (4.5 in) across about 13 days, and the humidity is somewhat lower at 71%.
For more details on the weather in February, you can visit China weather in February.
December and March exhibit similar average temperatures, with December featuring a minimum of 13°C (56°F) and a maximum of 25°C (77°F), and March showing slightly higher minimums at 14°C (57°F) and a maximum of 24°C (75°F). Both months experience comparable levels of humidity, hovering around 75%-76%. Precipitation levels are also close, with December receiving 135 mm (5.3 in) over 15 days and March having 138 mm (5.5 in) over just 13 days. For those interested in the weather patterns during March, more details can be found here: China weather in March.
When comparing the weather in December and April, one can observe some notable differences. December features slightly cooler temperatures, with an average of 19°C (67°F), while April warms up a bit, averaging 21°C (70°F). Both months have similar maximum temperatures at around 25°C (77°F), but December has lower minimum temperatures, starting at 13°C (56°F) compared to April's 15°C (59°F). Precipitation levels are somewhat comparable, with December receiving 135 mm (5.3 in) over 15 days and April slightly less at 119 mm (4.7 in) across 12 days. Additionally, April has a higher humidity level at 82% versus December's 75%. For further details, you can visit China weather in April.
In December, the weather features a mild temperature range with a minimum of 13°C (56°F) and an average of 19°C (67°F), reaching up to a maximum of 25°C (77°F). While precipitation is relatively high at 135 mm (5.3 in) over 15 days, the humidity remains comfortable at 75%. In contrast, May offers warmer conditions with a minimum temperature of 19°C (66°F) and an average of 23°C (74°F), peaking at 27°C (80°F). However, this month experiences even more rain, with 206 mm (8.1 in) of precipitation across 13 days and a higher humidity level of 84%. To explore more about the weather in May, you can visit China weather in May.
December and June present notably different weather patterns. In December, temperatures are mild, ranging from a minimum of 13°C (56°F) to a maximum of 25°C (77°F), with an average of 19°C (67°F). The month sees significant precipitation, totaling 135 mm (5.3 in) over about 15 days, and humidity levels hover around 75%. In contrast, June is warmer, with temperatures ranging from a minimum of 22°C (71°F) to a maximum of 28°C (83°F), and an average of 26°C (79°F). This month experiences a much higher rainfall of 403 mm (15.9 in) across approximately 20 days, along with increased humidity at 86%. For a more detailed look at the weather in June, check out China weather in June.
When comparing the weather between December and July, it's clear that each month offers a distinct climate experience. December features milder temperatures, with a minimum of 13°C (56°F) and an average of 19°C (67°F), while July is significantly warmer, boasting a minimum of 26°C (78°F) and averaging 28°C (82°F). In terms of precipitation, December sees 135 mm (5.3 in) over about 15 days, whereas July experiences a higher total of 174 mm (6.8 in) despite fewer rainy days, totaling only 11. Additionally, humidity levels rise in July to 86%, compared to December's 75%, making the summer month feel considerably muggy. For more insights on July weather specifics, you can check this link: China weather in July.
December and August present distinctly different weather profiles. In December, temperatures range from a mild minimum of 13°C (56°F) to a maximum of 25°C (77°F), accompanied by higher humidity levels of 75%. The month experiences around 135 mm (5.3 in) of precipitation across approximately 15 days. In contrast, August offers warmer conditions, with temperatures averaging between 25°C (78°F) at night to a high of 30°C (87°F) during the day. This month sees slightly more precipitation at 152 mm (6.0 in) over 14 days and a higher humidity of 82%. For more information, you can visit China weather in August.
In December, the weather tends to be cooler, with minimum temperatures around 13°C (56°F) and an average of 19°C (67°F). The month experiences about 135 mm (5.3 in) of precipitation over approximately 15 days, coupled with a humidity level of 75%. In contrast, September offers warmer conditions, with minimum temperatures reaching 24°C (75°F) and averaging 28°C (82°F). It also sees heavier rainfall, with 210 mm (8.3 in) spread over 20 days and a slightly higher humidity of 82%. For more detailed information on September weather, you can visit China weather in September.
In comparing the weather between December and October, December experiences cooler temperatures, with a minimum of 13°C (56°F) and an average high of 25°C (77°F). In contrast, October offers warmer conditions, featuring a minimum of 21°C (70°F) and an average high of 29°C (84°F). Both months witness significant rainfall, with December receiving 135 mm (5.3 in) over 15 days, while October sees slightly more precipitation at 142 mm (5.6 in) across 13 days. Humidity levels are relatively similar, with December at 75% and October slightly higher at 80%. For more detailed insights into October's climate, visit China weather in October.
In comparing the weather between December and November, December experiences slightly cooler temperatures, with a minimum of 13°C (56°F) compared to November's 18°C (65°F). The average temperature in December is 19°C (67°F), which is cooler than November's average of 23°C (73°F), while the maximum temperatures also reflect this trend, peaking at 25°C (77°F) in December versus 27°C (80°F) in November. Additionally, December has higher precipitation levels, totaling 135 mm (5.3 in) over 15 days, compared to November's 112 mm (4.4 in) over 11 days. Humidity remains relatively high in both months, with December at 75% and November slightly higher at 79%. For more detailed information about November weather, you can visit China weather in November.
As December sets in, China experiences a unique shift in weather compared to other months. Temperatures cool down, providing a relatively mild climate where the maximums hover around a comfortable 25°C but average closer to 19°C, making it a pleasant departure from the summer heat. However, the season brings increased precipitation, with about half the month experiencing rain, and humidity remains high at 75%. This blend of cooler temperatures and damp conditions makes December distinct, presenting an atmospheric transition before the peak of winter. For more insights into the varied weather patterns, explore China Climate.