Last updated: August 21, 2025
Sanya, China, in December offers a mild and pleasant climate, making it an attractive destination for winter travelers. With maximum temperatures reaching 28°C (82°F) and an average of 22°C (72°F), visitors can enjoy a comfortable atmosphere perfect for outdoor activities. Nighttime brings cooler temperatures, averaging around 13°C (55°F). Though December sees minimal rainfall, with only 3 rainy days and a total precipitation of 17 mm (0.7 in), the humidity hovers around 75%, adding a slight tropical feel to the air. This combination of warmth and low precipitation creates an ideal setting for beachgoers and adventure seekers alike.
In Sanya, China, December brings a delightful transition as the year winds down, with temperatures that are both mild and inviting. The average temperature settles around 22°C (72°F), creating a perfect backdrop for outdoor activities and beach strolls. With nighttime lows dipping to a comfortable 13°C (55°F), it’s a favorable time for those looking to escape colder climates. Daily highs can reach up to 28°C (82°F), allowing for ample sunshine and warm days. This month marks a shift from the balmy summer warmth, yet retains a pleasant tropical feel, making Sanya a splendid winter getaway for tourists seeking sun-drenched days. Overall, December captures the essence of a welcoming winter, blending warmth and comfort in this picturesque coastal paradise.
In Sanya, China, December marks a transition toward drier weather, with precipitation amounting to just 17 mm (0.7 in) over 3 days. This decline in rainfall is a stark contrast to the summer months, which are characterized by heavy downpours and peak precipitation levels, such as 338 mm (13.3 in) in July. As the year winds down, Sanya experiences significantly less rain compared to the peak wet season from May to October, where monthly totals frequently exceed 200 mm. This reduction in precipitation not only highlights December as one of the driest months but also enhances the appeal of Sanya's mild winter climate, making it a perfect escape for those seeking warmth and sunshine during the colder months.
In December, Sanya, China experiences a humidity level of 75%, marking a slight decrease from the more humid summer months, where levels peak at 87% in July and August. As the year progresses from January with a humidity of 70%, the trend showcases a steady increase until June, after which the humidity begins to gradually decline. This seasonal shift illustrates Sanya's tropical climate, characterized by higher humidity in the hotter months, giving way to more moderate conditions towards the end of the year. December's humidity is indicative of a transition that hints at the cooler, drier winter ahead, offering a more comfortable experience for residents and visitors alike.
In December, Sanya, China experiences a UV Index of 8, which places it in the very high exposure category with a burn time of approximately 15 minutes. This marks a slight decrease from November's UV Index of 9, indicating a trend of diminishing UV intensity as the year comes to a close. However, it remains important to take precautions against sun exposure, especially considering the preceding months where the UV Index frequently hit extreme levels of 14 from March through August. With the persistent high readings throughout the year, keeping informed about the UV conditions is crucial for sun safety. For more insights, explore the Sanya UV Index.
UV Risk Categories
In December, Sanya, China basks in a delightful 276 hours of sunshine, concluding the year with a warm embrace. Although sunlight begins to taper off from the higher peaks of the spring and summer months, like the year’s ambitious highs in May with 325 hours, December still offers a significant amount of bright days. The consistent glow throughout the year underscores Sanya's reputation as a sun-soaked paradise, making it an inviting destination even in winter. With each month transitioning smoothly from the vibrancy of mid-year sunshine to the softer light of December, Sanya’s climate showcases a captivating rhythm that appeals to sun-seekers and adventurers alike.
In December, Sanya, China, offers a 51% chance of sunny weather, marking a notable decline from the preceding months, yet still providing ample opportunity for enjoyable outdoor activities. This transitional period follows a robust November with a 59% likelihood of sunshine, hinting at a gradual shift as the year winds down. As the colder months approach, the percentage of sunny days dips, consistent with the pattern seen throughout the summer, where sunny weather plummeted to a mere 18% in June and hovered below 30% from July to September. Despite this, December’s moderate sunshine probability suggests that visitors can still look forward to clear skies, making it a pleasant time to experience the tropical charm of Sanya.
In Sanya, China, the December daylight duration reflects a trend of consistency typical for this coastal paradise. Throughout the year, daylight ranges from a minimum of 11 hours in the winter months of January, February, October, November, and December, to a peak of 13 hours during the vibrant summer months of June and July. The gradual transition into spring sees longer days, reaching a balmy 12 hours from March to May, creating a balanced rhythm that enhances Sanya's allure. As the year winds down, December settles back into that familiar 11-hour pattern, ensuring visitors can enjoy plenty of daylight to soak in the stunning beaches and warm climate.
As December arrives in Sanya, China, the coastal breeze reaches its peak with an average wind speed of 5.3 m/s (12 mph), marking it as one of the windiest months of the year. This notable increase from the calmer summer months, where winds hovered around 3.2 to 4.3 m/s, indicates a shift as the year draws to a close. The transition from the gentle winds of June to the brisk December gusts highlights a seasonal trend, underscoring the dynamic nature of Sanya’s climate. With the invigorating winds, this final month of the year not only invigorates the landscape but also enhances the allure of outdoor activities, making it an ideal time for visitors to experience the island's vibrant coastal charm.
Weather in Sanya varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sanya, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather features a mild temperature range with minimums at 13°C (55°F), averaging around 22°C (72°F), and reaching a maximum of 28°C (82°F). The month experiences about 17 mm (0.7 in) of precipitation over three days, contributing to a humidity level of 75%. In contrast, January sees slightly cooler conditions, with minimum temperatures of 11°C (53°F), an average of 21°C (71°F), and a maximum of 27°C (80°F). Precipitation decreases to 16 mm (0.6 in) over just two days, along with a drop in humidity to 70%. For more detailed insights, you can check Sanya weather in January.
In December, the weather is typically warm with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 28°C (82°F), averaging around 22°C (72°F). The month sees a light amount of rainfall, averaging 17 mm (0.7 in) over just three days, accompanied by relatively high humidity at 75%. On the other hand, February experiences similar minimum temperatures of 13°C (56°F) but a slight dip in the average to 21°C (71°F) and a maximum of 27°C (81°F). Precipitation increases to 24 mm (1.0 in) over four days, with humidity remaining similar at 73%. Overall, both months share a warm climate, but February tends to be slightly wetter than December. For more detailed information, visit Sanya weather in February.
December and March each offer their own unique weather characteristics. In December, temperatures range from a minimum of 13°C (55°F) to a maximum of 28°C (82°F), with an average of 22°C (72°F). The month sees relatively low precipitation at 17 mm (0.7 in) over three days, while humidity remains steady at 75%. In contrast, March experiences slightly warmer temperatures, with a minimum of 17°C (63°F), an average of 24°C (75°F), and a maximum of 29°C (84°F). Precipitation increases to 28 mm (1.1 in) over five days, maintaining the same humidity level of 75%. For detailed information on March weather, you can check Sanya weather in March.
December and April showcase contrasting weather patterns. In December, temperatures range from a mild minimum of 13°C (55°F) to a pleasant average of 22°C (72°F), peaking at 28°C (82°F). The month experiences relatively low precipitation at 17 mm (0.7 in) over just three days, maintaining a consistent humidity level of 75%. In contrast, April is warmer, with minimum temperatures of 17°C (63°F) and an average of 26°C (78°F), reaching a maximum of 31°C (87°F). However, it is also wetter, receiving 46 mm (1.8 in) of rain over 11 days. This shift in weather highlights the transitional characteristics of spring. For more detailed insights, check Sanya weather in April.
In December, the weather is relatively mild, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 28°C (82°F), and an average temperature of 22°C (72°F). The month experiences only a few rainy days, with a total precipitation of 17 mm (0.7 in) and humidity levels around 75%. In contrast, May brings warmer temperatures, with minimums of 21°C (71°F) and maximums reaching up to 33°C (91°F), averaging 28°C (82°F). However, it also sees a significant increase in rainfall, totaling 140 mm (5.5 in) over 18 rainy days and slightly higher humidity at 78%. For more details on the specific weather conditions during this month, you can visit Sanya weather in May.
In December, the weather is milder with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 28°C (82°F), creating an average of 22°C (72°F). This month experiences relatively low precipitation at 17 mm (0.7 in) over just 3 days, with humidity at 75%. In contrast, June sees much warmer temperatures, with a minimum of 25°C (78°F) and an average of 29°C (84°F), peaking at 32°C (90°F). However, it also brings significantly more rainfall, totaling 235 mm (9.2 in) across 23 days, along with slightly higher humidity at 80%. For a detailed look at the June climate, check out Sanya weather in June.
In December, the weather is generally mild with temperatures ranging from a comfortable minimum of 13°C (55°F) to a maximum of 28°C (82°F), averaging around 22°C (72°F). The month experiences low precipitation, totaling just 17 mm (0.7 in) over about three days, and maintains a humidity level of 75%. In contrast, July brings significantly warmer temperatures, with a minimum of 25°C (78°F) and highs peaking at 32°C (89°F), averaging 28°C (83°F). However, July is also characterized by much higher precipitation, with 338 mm (13.3 in) falling over 24 days, and humidity levels rising to 87%. For a detailed look at the weather during this time, check out Sanya weather in July.
In December, the weather is notably milder, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 28°C (82°F) and an average of 22°C (72°F). The month experiences relatively low precipitation, with only 17 mm (0.7 in) across about 3 days, and humidity levels at 75%. In contrast, August is characterized by much warmer temperatures, with a minimum of 25°C (77°F) and a maximum reaching 31°C (89°F), averaging around 28°C (83°F). However, August also brings significantly higher precipitation, totaling 289 mm (11.4 in) over 26 days and higher humidity at 87%. For more detailed information on the weather in August, check out Sanya weather in August.
In December, the weather is notably milder with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 28°C (82°F), averaging around 22°C (72°F). The month sees relatively low precipitation, totaling just 17 mm (0.7 in) over approximately 3 days, and humidity levels sit at 75%. In contrast, September experiences significantly warmer conditions, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 32°C (89°F), averaging about 28°C (82°F). Precipitation is much higher in September, with 218 mm (8.6 in) spread across 24 days, and humidity slightly elevated at 82%. For more detailed information, you can check out Sanya weather in September.
In comparing the weather between December and October, we see notable differences in temperature and precipitation. December enjoys milder temperatures, with a minimum of 13°C (55°F) and an average of 22°C (72°F), peaking at 28°C (82°F). In contrast, October is warmer overall, with a minimum of 21°C (70°F) and an average of 26°C (80°F), reaching a maximum of 31°C (88°F). However, October is significantly wetter, experiencing 242 mm (9.5 in) of precipitation over 17 days, compared to December's much drier 17 mm (0.7 in) over just 3 days. Humidity levels remain similar, with October at 80% and December slightly lower at 75%. For more detailed insights, check out Sanya weather in October.
December weather features slightly cooler temperatures compared to November, with average highs reaching 28°C (82°F) versus November's 29°C (85°F). The minimum temperatures in December dip to a comfortable 13°C (55°F), while November remains warmer with a minimum of 18°C (65°F). Additionally, December experiences significantly less precipitation, only 17 mm (0.7 in) over 3 days, compared to November's 71 mm (2.8 in) spread across 6 days. Humidity levels are quite comparable, with December at 75% and November at 76%. For more insights, visit Sanya weather in November.
As December settles over Sanya, the weather takes on a milder charm compared to the bustling summer months. With average temperatures hovering around a comfortable 22°C (72°F), visitors can enjoy pleasant outdoor activities without the sweltering heat. While the humidity remains relatively high at 75%, the month sees a significant drop in precipitation compared to earlier months, resulting in only 3 days of rainfall totaling 17 mm (0.7 in). This makes December an ideal time for travelers seeking a more temperate experience by the sea. To learn more about Sanya’s climatic variations throughout the year, check out Sanya Climate.