Last updated: August 21, 2025
In December, Haikou, China experiences a mild winter characterized by average temperatures around 10°C (50°F), with maximums reaching 21°C (69°F) and occasional dips to a chilly -1°C (30°F). The city witnesses a modest precipitation total of 23 mm (0.9 in) over approximately 4 rainy days, contributing to the region’s humidity levels of around 73%. This combination of mild temperatures and slight rainfall makes December a unique time to experience Haikou's winter charm.
In December, temperatures in Haikou, China begin to exhibit a chilly transition, with evening lows dipping to a brisk -1°C (30°F). The average daily temperature hovers around 10°C (50°F), offering a cool respite from the warmth of the preceding months. With maximums reaching up to 21°C (69°F), December provides a mild climate that signals the approaching winter, contrasting sharply with the hotter summer months where temperatures regularly exceed 30°C (86°F). This month is characterized by a noticeable drop in temperature as it wraps up the year, reflecting a trend towards cooler conditions that begins in November and continues into January. Perfect for enjoying the city's charm without the sweltering heat, December's weather invites both locals and visitors to explore Haikou's stunning landscapes comfortably.
In December, Haikou experiences a noticeable dip in precipitation, with only 23 mm (0.9 in) of rain accumulating over just 4 days. This marks a significant decline compared to the summer months, which see heavy rainfall, notably in July and August, when totals soar to around 271 mm (10.7 in) and 268 mm (10.5 in) respectively. As the year draws to a close, the trend shifts towards drier weather, making December one of the drier months alongside February and November, which also have low precipitation totals. This transition to less rain allows for clearer skies and more enjoyable outdoor conditions, contrasting sharply with the intense rainfall experienced in the peak of summer.
As December ushers in the winter months in Haikou, China, humidity begins to retreat from the sweltering highs of summer, where it peaked at a staggering 90% in August. With December's humidity settling at a comfortable 73%, it reflects a notable drop from the oppressive levels experienced in mid-year. In fact, following the humid summer months of June through September, which maintained levels above 80%, December offers a respite that hints at the transition to drier winter conditions. The gradual decline from November's 82% suggests a trend towards more moderate humidity, providing an inviting atmosphere for both locals and visitors enjoying the subtropical delights of this coastal city.
As the year winds down, December in Haikou, China, presents a noticeable dip in the UV Index, dropping to 7 and placing it in the high exposure category. This reduction offers a welcome respite from the extreme levels experienced in the summer months, where indices peaked at a staggering 16 in July. The burn time in December extends to 25 minutes, allowing for a more leisurely outdoor experience compared to the brisk 10 minutes during the peak summer months. Despite this drop, it's essential to remain vigilant about sun safety, as even lower UV levels can lead to skin damage over time. To learn more about the UV trends throughout the year, visit Haikou UV Index.
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In Haikou, China, December brings a pleasant respite as the city basks in 264 hours of sunshine, capping off a year filled with bright days. While December's sunlight slightly dips from the month's peak in May, it remains consistent with the sunny patterns seen throughout the year. An upward trend is evident in the spring months, with hours peaking during intensive sunshine in March at 322 hours, while summer months like June and July experience a decline, hinting at a trade-off with humidity and occasional rains. This end-of-year brightness is a charming invitation for both locals and travelers to indulge in outdoor activities, making December a delightful month in Haikou's climate calendar.
In December, Haikou, China experiences a 38% chance of sunny weather, marking a slight uptick from the previous months. This month signals a transition as the year wraps up, offering a mix of overcast days and occasional sunshine. Interestingly, this likelihood is higher than the peaks seen during the summer months, where the chance of sun plummets to a mere 12-18%. While December may not boast the brightest skies compared to the more sun-drenched March (76% chance), it still outshines the gloomy prospects of mid-year, providing a refreshing window for outdoor activities amid the winter chill. As the year closes, residents and visitors alike can look forward to pockets of sun, making this month a pleasantly surprising time to enjoy Haikou’s appeal.
In Haikou, China, the daylight duration follows a rhythmic annual pattern, peaking during the lush summer months. With 10 hours of daylight in both January and December, the year begins and ends on shorter days, setting a cozy scene for winter's chill. As spring approaches in March and April, the sunlight expands to 12 hours, inviting longer days filled with warmth. This trend continues into May and June, when daylight reaches its zenith at 13 hours, perfect for outdoor adventures. However, as summer wanes into August and transitions through September to November, the daylight gradually recedes back to 10 hours by winter’s end. This cyclical dance of light highlights the dynamic seasonal changes in Haikou, providing a captivating backdrop to daily life.
As December settles in Haikou, China, the average wind speed gently drops to 2.3 m/s (5 mph), marking a noticeable shift from the breezier months earlier in the year. Following a gradual increase from the lighter winds of summer, which hovered around 2.0 m/s, winter encapsulates the region in a more tranquil whisper. This trend of diminished wind is consistent with the typical seasonal variation, contrasting sharply with the 4.2 m/s gusts seen in March. As the year closes, the calming winds of December invite moments of peaceful reflection amidst the mild tropical climate, making it a perfect time for leisurely pursuits along the picturesque coast.
Weather in Haikou varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Haikou, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January offer similar average temperatures, ranging from a minimum of around -1°C to -2°C and a maximum of 21°C, with averages consistently at 10°C. However, January tends to be slightly wetter, with precipitation increasing from 23 mm in December to 39 mm, while the number of rainy days remains the same at four. Additionally, humidity decreases in January to 58%, compared to 73% in December, giving the month a drier feel. For more specific details, you can check Haikou weather in January.
In December, the weather typically ranges from a minimum of -1°C (30°F) to a maximum of 21°C (69°F), with an average temperature of around 10°C (50°F). The month experiences about 23 mm (0.9 in) of precipitation over four days, contributing to a higher humidity level at 73%. In contrast, February brings slightly milder temperatures, with a minimum of 0°C (31°F) and a maximum of 24°C (75°F), averaging 11°C (53°F). Precipitation decreases slightly to 20 mm (0.8 in) across just three days, and the humidity is lower at 65%. For more detailed insights into February weather, you can check Haikou weather in February.
December and March showcase quite different weather patterns. In December, temperatures typically range from a chilly minimum of -1°C (30°F) to a mild maximum of 21°C (69°F), with an average of 10°C (50°F). The month experiences about 23 mm (0.9 in) of precipitation over four days, and the humidity remains relatively high at 73%. In contrast, March presents a more temperate climate, with a minimum temperature of 6°C (42°F) and a maximum reaching 29°C (84°F), averaging 16°C (61°F). Precipitation increases slightly to 25 mm (1.0 in) over five days, but humidity drops significantly to 44%. For a closer look at the weather specifics in March, you can check this link: Haikou weather in March.
December weather features milder temperatures with an average of 10°C (50°F), ranging from a low of -1°C (30°F) to a high of 21°C (69°F). The month sees relatively low precipitation of 23 mm (0.9 in) over just 4 days, and humidity levels are on the higher side at 73%. In contrast, April brings significantly warmer conditions, showcasing an average temperature of 18°C (64°F), with lows of 4°C (40°F) and highs soaring up to 31°C (88°F). Precipitation also increases in April, amounting to 64 mm (2.5 in) across 8 days, but the humidity drops to a more comfortable 44%. For a deeper dive into the weather specifics for this month, check out Haikou weather in April.
In December, temperatures in Haikou range from a chilly -1°C (30°F) at night to a pleasant 21°C (69°F) during the day, with an average of around 10°C (50°F). The month sees relatively low precipitation at 23 mm (0.9 in) over just four days, and humidity levels hover around 73%. In contrast, May brings much warmer conditions, with nighttime lows of 7°C (46°F) and daytime highs reaching a sweltering 32°C (91°F), averaging about 20°C (69°F). Precipitation increases significantly to 65 mm (2.6 in) across eight days, while humidity drops to a more comfortable 62%. For more detailed insights, you can check out Haikou weather in May.
In December, the temperatures range from a chilly -1°C (30°F) to a mild 21°C (69°F), with an average of around 10°C (50°F). The month sees relatively low precipitation, with only 23 mm (0.9 in) spread over about 4 days, and the humidity hovers around 73%. In contrast, June features much warmer weather, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 31°C (87°F) and an average of 21°C (71°F). This month experiences significantly more rainfall, totaling 201 mm (7.9 in) over approximately 20 days, along with higher humidity levels at 82%. For a closer look at what to expect during June, check out Haikou weather in June.
December and July reflect contrasting weather patterns. In December, temperatures range from a chilly -1°C (30°F) at night to a milder average of 10°C (50°F) during the day, peaking at a pleasant 21°C (69°F). Precipitation is relatively low, with only 23 mm (0.9 in) over just four days, and humidity sits at 73%. In stark contrast, July experiences much warmer conditions, with nighttime temperatures not dropping below 14°C (58°F) and daytime averages around 21°C (69°F), hitting highs of 29°C (84°F). However, it is also the wettest month, with a substantial 271 mm (10.7 in) of rain spread over 26 days and a higher humidity level at 89%. For those wanting to know more about specific weather conditions, check Haikou weather in July.
December and August present a stark contrast in weather patterns. In December, temperatures range from a chilly -1°C (30°F) to a mild 21°C (69°F), with an average of 10°C (50°F). Precipitation is relatively low at 23 mm (0.9 in) over just 4 days, and humidity sits at 73%. In contrast, August experiences much warmer conditions, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 29°C (85°F), and an average temperature of 21°C (70°F). However, it is also notably wetter, with 268 mm (10.5 in) of rainfall spread over 26 days, and a higher humidity level of 90%. For more details on August weather, you can check out Haikou weather in August.
In December, temperatures range from a chilly -1°C (30°F) at night to a mild 21°C (69°F) during the day, with an average of 10°C (50°F). The month sees relatively low precipitation levels, with only 23 mm (0.9 in) spread over about four days and average humidity at 73%. In contrast, September brings much warmer weather, with evening lows of 11°C (52°F) and daytime highs reaching 28°C (82°F), averaging 19°C (67°F). However, it is notably wetter, experiencing 161 mm (6.3 in) of rainfall over 22 days, alongside higher humidity at 87%. For more details on the weather in this month, check out Haikou weather in September.
In December, the weather takes a cooler turn, with temperatures ranging from a low of -1°C (30°F) to a high of 21°C (69°F) and an average of 10°C (50°F). Precipitation is relatively light, with only 23 mm (0.9 in) falling over 4 days, while humidity remains at 73%. In contrast, October enjoys milder temperatures, with a minimum of 8°C (47°F), an average of 17°C (62°F), and a maximum of 26°C (78°F). However, it is also much wetter, accumulating 89 mm (3.5 in) of rain over 17 days and slightly higher humidity at 81%. For a more detailed look at the October weather, you can visit Haikou weather in October.
In comparing the weather of December and November, December experiences a cooler temperature range with a minimum of -1°C (30°F) and an average of 10°C (50°F), while November enjoys milder conditions, with temperatures ranging from a minimum of 5°C (40°F) to an average of 13°C (56°F). Precipitation is slightly lower in December at 23 mm (0.9 in) over 4 days, compared to November's 32 mm (1.3 in) across 6 days, indicating a drier month ahead. Humidity also decreases in December to 73%, while November remains more humid at 82%. For a closer look at November's weather, you can visit Haikou weather in November.
As December unfolds in Haikou, it brings a distinct change in weather compared to the rest of the year. With temperatures ranging from a cool 10°C to a mild 21°C, it marks a welcome respite from the often sweltering heat of the summer months. The month enjoys relatively low precipitation, with only a few rainy days, allowing for plenty of clear skies and refreshing breezes. The humidity remains moderate at 73%, adding a gentle crispness to the air. This unique climate makes December an ideal time for outdoor activities and exploration. For more details on what to expect throughout the year, check out Haikou Climate.