Last updated: August 21, 2025
December in Ya'an, China showcases a unique blend of chilly temperatures and damp conditions. With a maximum temperature reaching only 15°C (60°F) and an average of 6°C (43°F), the city experiences a cool climate that can drop to a minimum of -5°C (24°F) at night. This month witnesses significant precipitation, accumulating to 61 mm (2.4 in) over 16 rainy days, contributing to a notable humidity level of 87%. Visitors can expect a moist atmosphere that enhances the region's lush landscapes, making December a distinct time to appreciate Ya'an's natural beauty despite the cool, wet weather.
In December, Ya'an, China experiences a noticeable dip in temperatures as winter fully takes hold. The month ushers in chilly conditions, with minimums falling to -5°C (24°F), marking the coldest point of the year. Despite the brisk air, the average temperature settles around 6°C (43°F), providing a stark contrast to the warmer months that precede it. Daytime highs reach only about 15°C (60°F), signaling the end of the mild weather. This seasonal shift not only enhances the picturesque winter landscape but also emphasizes the increasingly colder climate as the year draws to a close, paving the way for the frosty depths of January.
In December, Ya'an, China, experiences a moderate precipitation level of 61 mm (2.4 in) over approximately 16 days, marking a slight decrease from the previous month's 70 mm. This drop is part of a general trend as the year draws to a close, following the peak rainfall in the summer months of July and August, where precipitation soared to 259 mm and 381 mm respectively. As autumn transitions into winter, the rainfall becomes less frequent, yet still substantial enough to maintain the lush landscape typical of this region. The December weather, with its mild rainfall, sets the stage for a serene end to the year, encapsulating the shift from the intense rainy season to the quieter, cooler months ahead.
In December, Ya'an, China, experiences a humidity level of 87%, which is slightly lower than the peak months of August and September, where humidity reaches a notable 91%. This substantial moisture in the air is a trend that starts in the warm summer months and gently tapers off towards the end of the year. Throughout the winter months, humidity remains relatively high, averaging in the mid to upper 80s. This consistent humidity pattern highlights Ya'an's subtropical climate, characterized by prolonged moist conditions, making it a unique environment that significantly influences the region's lush landscapes and vibrant ecosystems. As the year comes to a close, December’s humidity retains a certain warmth but hints at the cooler, drier air that January may bring.
In December, Ya'an, China experiences a notable shift in its UV Index, dropping to 5, which falls into the moderate exposure category. This marks a significant decrease from the extreme levels observed in the preceding months, such as April through September when indices reached as high as 13. As a result, the burn time extends to 30 minutes, offering residents and visitors more leeway for sun exposure without the immediate risk of skin damage. This seasonal variation underscores the importance of sun protection, particularly in the spring and summer months when the UV Index is at its peak. For more details on Ya'an's UV Index throughout the year, visit Ya'an UV Index.
UV Risk Categories
In December, Ya'an, China experiences a delightful embrace of sunlight, boasting approximately 265 hours of sunshine. This marks a gentle decline from the vibrant months of spring and summer, where sunshine peaked in March with an impressive 288 hours. As the year winds down, December's hours reflect a consistent trend observed throughout the fall, yet still surpassing the gloomier months of October and September. With the landscape’s lush greenery illuminated by this winter sun, December in Ya'an is a picturesque reminder that even as the year comes to a close, the warmth of sunshine can still shine through.
In December, Ya'an, China, experiences a 24% chance of sunny weather, reflecting a slight uptick from the preceding months. This period aligns with the trend of the late year, where the probability of sunshine stabilizes after a dip in October, which sees only a 7% chance. The consistency of 24% observed in both November and December suggests a noteworthy shift, hinting that the gloomy days of winter may begin to yield to brighter spells as the year winds down. As temperatures drop, the cloudier skies typical of earlier in the fall give way to occasional sunny breaks, making December a month where hidden sunlight may just surprise those who venture outside.
In December, Ya'an, China experiences a return to shorter days, with daylight lasting around 10 hours. This marks a gradual decline from the peak of 14 hours of daylight in June, as the year shifts toward winter. The trend reveals a clear seasonal pattern: after March, where the days stabilize at an average of 11 hours, the duration continues to increase until it reaches its zenith in June, followed by a steady decrease as the temperature cools. By the time December arrives, the daylight mirrors that of January, heralding the onset of a new cycle. This consistent ebb and flow of daylight throughout the year not only influences local life but also beautifully illustrates the rhythm of nature in this picturesque region.
In Ya'an, China, December ushers in a gentle breeze, with an average wind speed of 1.1 m/s (3 mph), consistent with the subdued winds characteristic of the late autumn months. Throughout the year, the wind speeds have shown a slight decline, peaking modestly in the first half of the year, particularly in February and March at 1.3 m/s (3 mph). The transition into the summer months, especially from June to October, reflects a pattern of lesser winds, dipping to 1.0 m/s (2 mph) by October. December's winds mirror the tranquil nature of this time of year, cementing a trend of mild and serene weather as the region prepares for the chill of winter. The overall steadiness in wind patterns invites a sense of calm, making Ya'an a refreshing escape during this peaceful season.
Weather in Ya'an varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ya'an, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather typically features a minimum temperature of -5°C (24°F) and an average of 6°C (43°F), with a maximum reaching 15°C (60°F). The month sees 61 mm (2.4 in) of precipitation over 16 days, along with high humidity levels at 87%. In contrast, January experiences slightly milder temperatures with a minimum of -4°C (25°F) and an average of 5°C (41°F), while also reaching up to 15°C (60°F) at its warmest. Precipitation in January decreases to 50 mm (2.0 in) over 15 days, and humidity remains comparable at 86%. For more detailed information on January's weather conditions, you can visit Ya'an weather in January.
December and February both exhibit chilly temperatures, with December's average high reaching 15°C (60°F) compared to February's warmer 21°C (70°F). Notably, December shows a slight dip in temperatures, with minimums hitting as low as -5°C (24°F), while February records a milder minimum of -2°C (28°F). Precipitation is consistent between the two months, with December seeing 61 mm over 16 days and February slightly lower at 60 mm over 14 days. Both months maintain high humidity levels of around 87%. For more detailed weather information, you can refer to Ya'an weather in February.
December and March present distinct weather contrasts. In December, temperatures range from a chilly minimum of -5°C (24°F) to a milder maximum of 15°C (60°F), with an average of 6°C (43°F). The month is characterized by high humidity at 87% and experiences about 61 mm (2.4 in) of precipitation over 16 days. In contrast, March sees a notable increase in temperatures, with a minimum of 1°C (34°F) and a maximum reaching 26°C (80°F), resulting in an average temperature of 12°C (54°F). Although March receives slightly more precipitation at 79 mm (3.1 in) over 19 days, the humidity is lower at 78%. For a closer look at March weather specifics, you can visit Ya'an weather in March.
December and April present quite different weather patterns. In December, temperatures range from a chilly minimum of -5°C (24°F) to a milder maximum of 15°C (60°F), with an average around 6°C (43°F). The month experiences 61 mm (2.4 in) of precipitation over 16 days, paired with a high humidity level of 87%. In contrast, April offers significantly warmer conditions, with temperatures starting at a minimum of 6°C (43°F) and soaring to a maximum of 29°C (85°F), averaging around 16°C (60°F). This month sees increased precipitation as well, totaling 149 mm (5.9 in) across 19 days, but with a slightly lower humidity of 80%. For more details on April's weather, you can visit Ya'an weather in April.
December and May exhibit strikingly different weather patterns. In December, the temperatures range from a chilly -5°C (24°F) to a mild 15°C (60°F), with an average of 6°C (43°F). This month experiences about 61 mm (2.4 inches) of precipitation over 16 days, accompanied by high humidity levels of 87%. In contrast, May brings a more temperate climate, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 30°C (86°F) and an average of 19°C (66°F). Rainfall increases significantly to 151 mm (6.0 inches) over 18 days, yet the humidity remains consistent at 87%. For a closer look at May weather in Ya'an, check out Ya'an weather in May.
In December, temperatures can be quite chilly, with a minimum of -5°C (24°F) and an average of 6°C (43°F), making it a colder month overall. The weather is characterized by relatively low precipitation of 61 mm (2.4 in) spread over 16 days, along with high humidity levels at 87%. In contrast, June brings a significant rise in temperature, with averages soaring to 22°C (71°F) and maximums reaching 32°C (89°F). There is more rainfall in June, totaling 152 mm (6.0 in) over 19 days, and humidity remains high at 89%. For a detailed look at June conditions, check out Ya'an weather in June.
December and July present stark contrasts in weather patterns. In December, temperatures range from a chilly -5°C (24°F) at night to a mild 15°C (60°F) during the day, with average humidity at 87%. This month experiences 61 mm (2.4 in) of precipitation spread over 16 days, making it relatively damp. In contrast, July boasts much warmer conditions, with temperatures ranging from a minimum of 18°C (64°F) to a maximum of 34°C (94°F) and an average of 24°C (75°F). Although July is significantly wetter, with 259 mm (10.2 in) of rain over 23 days, the humidity remains similarly high at 89%. For a closer look at July's weather, you can refer to Ya'an weather in July.
In December, the weather is notably cooler, with temperatures ranging from a chilly -5°C (24°F) at night to a mild average of 6°C (43°F) during the day, peaking at around 15°C (60°F). Precipitation is moderate with about 61 mm (2.4 in) spread across 16 days, and humidity levels hover high at 87%. In contrast, August experiences significantly warmer temperatures, with lows around 17°C (62°F) and daytime averages reaching 24°C (75°F), maxing out at 34°C (93°F). This summer month is also much wetter, receiving 381 mm (15.0 in) of rainfall over 24 days and an even higher humidity of 91%. For more details on August weather, you can visit Ya'an weather in August.
When comparing the weather in December and September, the contrast is quite striking. December experiences much cooler temperatures, with a minimum of -5°C (24°F) and an average of 6°C (43°F), while September boasts a milder climate with a minimum of 13°C (56°F) and an average of 20°C (69°F). Additionally, September is markedly wetter, receiving 202 mm (7.9 in) of precipitation over 22 days, compared to December's 61 mm (2.4 in) over 16 days. Humidity levels are also slightly higher in September at 91%, compared to December’s 87%. For more details on September weather, you can check out Ya'an weather in September.
In December, the weather is significantly colder compared to October, with temperatures ranging from a chilly -5°C (24°F) to a maximum of 15°C (60°F), averaging around 6°C (43°F). In contrast, October enjoys milder temperatures, with a minimum of 9°C (48°F) and a pleasant average of 15°C (59°F), peaking at 27°C (82°F). Additionally, December experiences less precipitation at 61 mm (2.4 in) over 16 days, compared to October's heavier rainfall of 151 mm (5.9 in) spread over 26 days. Both months have high humidity levels, with December at 87% and October at 90%. For more detailed information, you can check Ya'an weather in October.
In comparing December and November weather, December experiences colder temperatures, with a minimum of -5°C (24°F) and an average of 6°C (43°F), contrasting sharply with November's milder range that features a minimum of 2°C (36°F) and an average of 11°C (51°F). Additionally, December is characterized by a greater number of cold days, despite slightly less total precipitation at 61 mm (2.4 in) over 16 days compared to November's 70 mm (2.8 in) over 17 days. Humidity levels are also slightly lower in December at 87%, compared to November’s 91%. For more details on November weather specifics, you can visit Ya'an weather in November.
As December settles over Ya'an, the city's weather showcases a distinctive chill that sets it apart from the milder months earlier in the year. The temperature dips notably, with an average chill that invites cozy layers and hot beverages. The increase in precipitation days transforms the landscape into a lush, green panorama, as moisture lingers in the air and keeps humidity levels high. This combination of cooler temperatures and frequent rain underscores a transition into winter, creating a tranquil ambiance that many find captivating. For those interested in exploring more about the seasonal dynamics, Ya'an Climate offers a comprehensive overview.