Last updated: August 21, 2025
In December, Hainan, China experiences a unique winter climate characterized by a maximum temperature of 6°C (43°F) and an average of -18°C (0°F). With minimum temperatures dipping to -32°C (-26°F), the month can feel brisk, yet only 9 mm (0.3 inches) of precipitation falls over an average of 2 days, allowing for plenty of clear, crisp days. At 60% humidity, the air feels charged with winter's chill, making this a distinctive and refreshing time to explore Hainan's natural beauty and cultural offerings.
In Hainan, China, December brings a notable chill as temperatures plunge further into the winter abyss. With minimums hovering around -32°C (-26°F) and a brisk average of -18°C (0°F), the month marks one of the coldest periods of the year. Interestingly, while the maximum temperatures can reach up to 6°C (43°F), they still reflect a stark contrast to the balmy summer months. This transition from November's biting cold of -25°C (-14°F) to December's slightly elevated temperatures emphasizes the striking seasonal shifts. As the year draws to a close, the crisp air and potential for snowfall create a serene winter landscape, inviting a quiet reflection on the dramatic temperature variations that characterize Hainan’s climate.
In December, Hainan, China, experiences a noticeable decrease in precipitation, with only 9 mm (0.3 in) of rainfall falling over just two days. This marks a sharp contrast to the peak monsoon months of July and August, where precipitation averages soar above 175 mm and the island sees up to 17 days of rain. As the year wraps up, the shift to drier conditions remains evident, with December's rainfall continuing a trend of declining moisture since the prior summer months. This seasonal transition underscores Hainan's distinct wet and dry cycles, creating a period where the island enjoys a brief lull in rain, paving the way for clearer, milder weather.
In Hainan, China, December marks a transition in humidity levels, dropping to around 60%. This decrease continues the trend seen from November's 61% humidity, indicating a gradual easing as the year winds down. As we look back over the months, it's evident that Hainan experiences its peak humidity during the summer, reaching a sweltering 87% in August and hovering around 84% in July. The humidity begins to decline significantly in late autumn, following a peak summer pattern, as the region shifts towards drier, cooler air in the winter months. This cyclical fluctuation highlights Hainan's tropical climate, characterized by both vibrant summers and relatively comfortable winters.
In Hainan, China, December ushers in a notable decline in UV radiation, with the UV Index dropping to a low level of 1. This means that sun exposure is minimal during this month, allowing residents and visitors to enjoy outdoor activities with less concern about sunburn, as the recommended burn time stretches to 45 minutes. Reflecting on the year, there is a clear trend of increasing intensity: starting from January's UV Index of 2 and peaking in the summer months with values as high as 9 in July. As the year progresses, the UV levels gradually decrease, culminating in the gentle embrace of December's sunlight. For more detailed insights on UV exposure throughout the year, check out Hainan UV Index.
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As December unfolds in Hainan, China, the island basks in 225 hours of sunshine, providing a warm respite as the year draws to a close. This marks a slight dip from the vibrant late autumn months, yet still showcases more sunshine than the earlier winter months. The trend over the months clearly reveals a gradual increase in daylight, peaking in the summer with 341 hours in July, before descending again as the days grow shorter. With December's sunshine outshining the cold grip of winter in many regions, Hainan remains an inviting escape, celebrating the lingering warmth of the season amidst its tropical charm.
In December, Hainan, China, reveals a promising 68% chance of sunshine, making it one of the brightest months of the year. This marks an increase from November’s relatively overcast 35%, suggesting a welcoming transition as the region shifts into winter. As we look at the broader patterns, it's fascinating to see how the odds of sunny days peak in December, following a consistent decline through the summer months where July and August dip to their lowest at 27% and 33%, respectively. Overall, December not only offers a delightful respite from the gloom of late autumn but also stands out as a standout month for sun seekers amid Hainan's fluctuating seasonal weather.
In Hainan, China, the daylight duration exhibits a captivating seasonal rhythm, culminating in a striking contrast between the vibrant summer months and the shorter winter days. As the year progresses, daylight gradually increases from a modest 8 hours in January to a generous 15 hours from May to July, allowing for ample time to bask in the tropical sun and enjoy outdoor activities. However, this abundance begins to wane after August, with daylight tapering back to 12 hours in September and descending once more to 8 hours by December. This cyclical pattern not only highlights Hainan's unique tropical climate but also reflects the natural ebb and flow of light as the seasons change, creating an inviting atmosphere for both locals and visitors throughout the year.
As December arrives in Hainan, the average wind speed hovers around 3.2 m/s (7 mph), marking a slight decline from the bustling breezes of early spring. This month, we see a gentle wind pattern that reflects the transitional nature of the season, as the winds are calmer than the more robust gusts of April, which peaks at 4.0 m/s (9 mph). Interestingly, the overall trend indicates that while Hainan experiences some fluctuations in wind speed throughout the year, December’s breezes maintain a consistency reminiscent of the slower summer months. With the winds softening, the island's charm becomes even more inviting as visitors bask in the pleasant atmosphere, making it a delightful destination for those seeking tranquility amid the beauty of winter in China.
Weather in Hainan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hainan, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January present notably frigid conditions, with January typically being colder than December. In December, temperatures range from a minimum of -32°C (-26°F) to a maximum of 6°C (43°F), with an average temperature of -18°C (0°F). The month sees light precipitation of about 9 mm (0.3 in) over 2 days, coupled with a humidity level of 60%. In contrast, January experiences even harsher temperatures, with minimums plunging to -38°C (-36°F) and a maximum of -3°C (27°F). The average temperature drops to -20°C (-4°F), and precipitation decreases to 5 mm (0.2 in) over just 1 day, while humidity rises to 75%. This increase in humidity may further amplify the bitter cold, making winter in January feel even more intense than in December. For those considering travel to warmer destinations, Hainan weather in January offers a stark contrast to the chilling temperatures experienced in these months.
In December, the weather is notably colder with an average temperature of -18°C (0°F) and a maximum of 6°C (43°F). The month experiences slight precipitation, totaling 9 mm, over the course of 2 days, with a humidity level of 60%. In comparison, February sees a slightly improved average temperature of -15°C (5°F) and a maximum of 8°C (47°F). This month is characterized by even lower precipitation, just 6 mm over 1 day, albeit with increased humidity at 70%. Overall, February presents a marginally milder, yet still frigid climate compared to December. For more detailed insights into weather patterns, check out Hainan weather in February.
In December, the weather is notably chillier, with average temperatures hovering around -18°C (0°F) and maximums only reaching 6°C (43°F). This month sees very little precipitation, with just 9 mm (0.3 in) falling over 2 days, and humidity levels sit at 60%. In contrast, March experiences a significant shift as temperatures rise, averaging -3°C (26°F) with maximums climbing to a more comfortable 17°C (63°F). Precipitation increases slightly to 13 mm (0.5 in) over 3 days, and the humidity is slightly higher at 63%. For more details on weather conditions in March, you can visit Hainan weather in March.
December and April present a stark contrast in weather conditions. In December, temperatures can plummet to a minimum of -32°C (-26°F), with an average hovering around -18°C (0°F) and a maximum of just 6°C (43°F). Precipitation is minimal, with only 9 mm (0.3 in) falling over just 2 days, and humidity rests at around 60%. In contrast, April boasts much milder temperatures, ranging from a minimum of -9°C (16°F) to a maximum of 25°C (78°F), with an average temperature of 7°C (44°F). The month sees more rainfall, accumulating 32 mm (1.3 in) over 4 days, while humidity remains slightly lower at 59%. For more details on April weather, you can check Hainan weather in April.
December and May present contrasting weather patterns, showcasing the stark differences between winter and spring. In December, temperatures can plunge to a minimum of -32°C (-26°F), with an average high of only 6°C (43°F), resulting in a frigid atmosphere. Precipitation is minimal, occurring over just two days, and the humidity hovers around 60%. In stark contrast, May brings a significant warming trend, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 31°C (89°F) and an average of 14°C (58°F). This month experiences much more rainfall, with precipitation on 11 days totaling 72 mm (2.8 in), while humidity slightly increases to 61%. For more details about weather in May, you can explore Hainan weather in May.
In December, the weather is frigid, with temperatures ranging from a brutal minimum of -32°C (-26°F) to a maximum of just 6°C (43°F), accompanied by low precipitation of only 9 mm (0.3 in) over just 2 days and a humidity level of 60%. In stark contrast, June brings warm and inviting conditions, with a minimum temperature of 6°C (43°F), an average of 19°C (67°F), and highs soaring up to 36°C (97°F). This month also sees significantly more rainfall, totaling 126 mm (4.9 in) across 15 days, along with higher humidity at 79%. For more details on June weather patterns, you can check Hainan weather in June.
December and July present starkly contrasting weather conditions. In December, temperatures can plummet to a chilling minimum of -32°C (-26°F), with an average around -18°C (0°F) and a maximum of only 6°C (43°F). The month sees limited precipitation, totaling just 9 mm (0.3 in) across only 2 days, and humidity levels hover around 60%. In contrast, July experiences a much milder climate, with temperatures ranging from a minimum of 13°C (57°F) to a maximum of 34°C (93°F) and an average of 23°C (74°F). This month is characterized by significant rainfall, accumulating 175 mm (6.9 in) over 17 days, coupled with higher humidity levels of 84%. For more insights into the summer climate, you can see Hainan weather in July.
December and August showcase starkly contrasting weather conditions. In December, temperatures plummet to a minimum of -32°C (-26°F) and average around -18°C (0°F), with a maximum of 6°C (43°F). Humidity levels hover at 60%, and there is minimal precipitation, averaging just 9 mm over only 2 days. In contrast, August brings a much milder climate, with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 29°C (85°F) and an average of 20°C (69°F). The month is characterized by significant rainfall, totaling 183 mm over 17 days, coupled with higher humidity at 87%. For more detailed information on Hainan's weather during this vibrant month, you can check Hainan weather in August.
December and September present starkly contrasting weather conditions. In December, temperatures drop significantly, with a minimum of -32°C (-26°F) and an average temperature of -18°C (0°F), while the maximum reaches only 6°C (43°F). This month is characterized by low precipitation, with just 9 mm (0.3 in) falling over 2 days and a humidity level of 60%. In contrast, September boasts a much milder climate, featuring a minimum temperature of 0°C (33°F) and a comfortable average of 15°C (59°F), with a maximum of 28°C (83°F). The month is much wetter, receiving 103 mm (4.1 in) of rainfall over 9 days and higher humidity at 85%. For more insights, visit Hainan weather in September.
In December, the weather takes a stark turn towards winter, with temperatures plummeting to a minimum of -32°C (-26°F) and averaging around -18°C (0°F). In contrast, October showcases milder conditions, where temperatures range from a minimum of -10°C (15°F) to a comfortable maximum of 27°C (80°F), making it a much more pleasant month. While December is marked by low precipitation (9 mm over just 2 days), October experiences higher rainfall at 22 mm over 4 days. Additionally, October's humidity is higher at 80%, compared to December's 60%. For more detailed information about October weather, you can refer to this link: Hainan weather in October.
In December, the weather becomes significantly colder compared to November, with average temperatures dropping from -6°C (21°F) in November to -18°C (0°F) in December. The minimum temperatures also decrease, reaching a frigid -32°C (-26°F) in December compared to -25°C (-14°F) in November. Additionally, December experiences less precipitation, with only 9 mm (0.3 in) over 2 days, whereas November has 22 mm (0.9 in) of precipitation spread across 4 days. Humidity remains relatively stable, at 60% in December and 61% in November. For those interested in weather patterns, more details on November can be found at Hainan weather in November.
As December arrives in Hainan, the weather undergoes a notable transformation compared to other months. The chill sets in with temperatures dipping significantly, making it one of the coldest periods of the year. With limited precipitation and humidity levels around 60%, the air feels crisp and invigorating. This unique blend of cooler temperatures and lower rainfall offers a serene atmosphere, perfect for enjoying the natural beauty and tranquility of Hainan. For a deeper dive into how Hainan's weather patterns shift throughout the year, explore the comprehensive details available at Hainan Climate.