Last updated: August 21, 2025
In December, Haikou, China, experiences a mild climate that provides a refreshing escape from the winter chill. With maximum temperatures reaching a comfortable 25°C (77°F) and an average of 14°C (58°F), the weather remains pleasant for outdoor activities. However, temperatures can dip as low as 7°C (45°F) at night, so a light jacket may be necessary. The city sees about 49 mm (1.9 in) of rain over 9 days, resulting in a humidity level of 79% that adds a slight tropical feel to the air. Whether you’re exploring vibrant local markets or relaxing by the coast, December in Haikou offers a unique blend of warmth and moisture, perfect for travelers seeking both adventure and comfort.
In December, Haikou, China, experiences a notable shift as the temperatures begin to cool, marking the transition into winter. With minimums hovering around 7°C (45°F) and averages at 14°C (58°F), the weather is milder compared to the chillier northern regions of the country. The maximum temperatures can rise up to 25°C (77°F), offering pleasantly warm afternoons that invite outdoor exploration. This month stands out as a period of gradual decline from the preceding months of warmth, yet still maintains a comfortable climate, making it an appealing time for visitors seeking to enjoy Haikou’s scenic beauty without the heat-induced languor of summer.
In December, Haikou experiences a notable reduction in precipitation, with only 49 mm (1.9 in) of rain recorded over 9 days. This marks a shift from the heavier rainfall seen in the preceding months, particularly June and August, which often bring the region's highest totals, peaking at 269 mm (10.6 in) and 260 mm (10.2 in), respectively. As the year winds down, December's milder rainfall allows for a clearer, more pleasant atmosphere, contrasting sharply with the summer months characterized by frequent and intense showers. Overall, December serves as a gentle reminder of the region’s seasonal transitions, providing a brief respite before the wetter months return.
In Haikou, China, December brings a slight dip in humidity, averaging 79%, which aligns closely with the year-end trend of decreasing moisture levels. The city experiences its highest humidity during the lush months of May and April, reaching peaks of 85% and 81%, respectively. As the year transitions from summer to autumn, humidity levels begin to decline, with a notable drop to 70% in September. This gradual decrease continues into the colder months, yet December remains comfortably humid, preserving Haikou's tropical charm. The stable humidity levels throughout the year, particularly in the winter, create a unique climate that appeals to both residents and visitors alike.
In December, Haikou experiences a notable shift in its UV Index, dropping to 6, which falls into the high exposure category. This signifies a slight reprieve from the extreme levels seen in the peak of summer, where the UV Index reached 13 from June to August, prompting a rapid burn time of just 10 minutes. As the year transitions, the burn time in December extends to 25 minutes, allowing sunbathers a bit more freedom under the sun. Despite this decrease, it's essential to remain vigilant, as UV levels can still pose risks. For those planning outdoor activities, understanding the Haikou UV Index is crucial for safe sun exposure throughout the year.
UV Risk Categories
December in Haikou, China, welcomes a gentle retreat into the cooler months, with 215 hours of sunshine gracing the city. While the daylight begins to wane from the peak summer sunlight of 331 hours in July, it still offers a pleasant escape from the winter chill, providing ample opportunities to revel in the outdoors. This month marks a transition as days gradually shorten, yet Haikou remains bathed in a warm glow, outshining most of the preceding months. With February and March showcasing stronger sunlight with 232 and 272 hours respectively, December's light signals the slow approach to winter while still embodying the essence of tropical warmth. Overall, Haikou's December sun, though less abundant than earlier months, continues to illuminate life, making it a delightful time to explore the city's scenic beauty.
In December, Haikou experiences a 34% chance of sunny weather, which mirrors the trend of dwindling sunshine as the year progresses. The sunny probabilities dip notably from the higher likelihoods observed in the earlier months, such as 53% in January and 52% in September. This pattern underscores a clear seasonal shift, with December being one of the months when bright days become less frequent, similar to November's 34%. While not the sunniest time of year, December offers a balanced climate that can still surprise with cheerful, sunny breaks amid cooler days.
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 unfolds in Haikou, the average wind speed reaches 5.7 m/s (13 mph), making it a notable month for coastal breezes. This marks a slight increase from November’s 5.1 m/s, showcasing a gradual uptick in wind activity as the year comes to a close. Interestingly, December’s winds are notably brisker than those of the quieter summer months, such as May and September, which see averages dipping as low as 3.5 m/s (8 mph). Such variations highlight a seasonal trend where the transition into winter brings a refreshing vigor to the region's atmosphere, providing an invigorating experience for those embracing the outdoors.
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.
In December, the weather tends to be slightly warmer than in January, with average temperatures reaching 14°C (58°F) and maximums peaking at 25°C (77°F). The month experiences a bit more rainfall, with 49 mm (1.9 in) of precipitation over approximately 9 days, accompanied by higher humidity levels at 79%. In contrast, January sees a drop in minimum temperatures to 3°C (38°F) and an average of 12°C (55°F), while maximums remain similar at 24°C (76°F). Precipitation is slightly less at 45 mm (1.8 in) over 6 days, and humidity decreases to 73%. For more detailed insights, you can check out the Haikou weather in January.
In December, temperatures in Haikou range from a minimum of 7°C (45°F) to a maximum of 25°C (77°F), with an average temperature of 14°C (58°F). The month experiences around 49 mm (1.9 in) of precipitation over 9 days, coupled with a higher humidity level of 79%. In contrast, February sees slightly cooler conditions, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 24°C (76°F) and an average of 12°C (54°F). This month is wetter, receiving 70 mm (2.8 in) of rainfall over the same 9 days, while humidity decreases to 73%. For more detailed information, check out Haikou weather in February.
In December, the weather presents a milder climate with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 25°C (77°F) and a total precipitation of 49 mm (1.9 in) over approximately 9 days. The humidity level sits at about 79%, creating a comfortable atmosphere for most of the month.
In contrast, March sees slightly warmer temperatures, with minimums at 7°C (46°F) and maximums reaching 26°C (80°F), making it just a tad warmer overall. The rainfall increases significantly to 123 mm (4.8 in), spread over 14 days, coupled with a humidity level that remains high at 80%. This shift in precipitation and temperature indicates more frequent rain in March compared to December. For more details, check out Haikou weather in March.
When comparing the weather in December and April, we can observe notable differences in temperature and precipitation patterns. December typically has a minimum temperature of 7°C (45°F) and an average of 14°C (58°F), while April starts off warmer with a minimum of 10°C (50°F) and an average of 19°C (66°F). The maximum temperatures also climb, with December reaching up to 25°C (77°F) compared to April's 29°C (84°F). In terms of precipitation, December experiences about 49 mm (1.9 in) over 9 days, whereas April sees a higher total of 88 mm (3.5 in) across 11 days. Humidity levels remain relatively high in both months, with December at 79% and April slightly higher at 81%. For a detailed look at the April weather, you can visit Haikou weather in April.
The weather in December is generally milder, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 25°C (77°F) and an average of 14°C (58°F), accompanied by 49 mm (1.9 in) of precipitation over about 9 days. In contrast, May experiences significantly warmer conditions, with temperatures ranging from 14°C (57°F) to a high of 32°C (90°F), averaging around 23°C (74°F). Additionally, May sees more rainfall, totaling 155 mm (6.1 in) across approximately 15 days, and slightly higher humidity at 85%. This difference highlights the transition from a cool, drier season in December to a warmer, wetter month in May. For more details, you can check out Haikou weather in May.
In December, the weather features milder temperatures, with a minimum of 7°C (45°F) and a maximum of 25°C (77°F), leading to an average temperature of 14°C (58°F). Precipitation is relatively low at 49 mm (1.9 in) over 9 days, accompanied by a humidity level of 79%. In contrast, June brings significantly warmer conditions, with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 33°C (92°F) and an average of 27°C (80°F). However, June is much wetter, experiencing 269 mm (10.6 in) of rain over 18 days, while the humidity rises slightly to 81%. For a more detailed look at the weather patterns, check out Haikou weather in June.
When comparing the weather in December and July, it's clear that these months present distinct atmospheric conditions. December features milder temperatures with a minimum of 7°C (45°F), an average of 14°C (58°F), and a maximum of 25°C (77°F). The month sees about 49 mm (1.9 in) of precipitation over 9 days, accompanied by a humidity level of 79%. In contrast, July experiences significantly warmer weather, with temperatures ranging from a minimum of 25°C (78°F) to an average of 29°C (84°F) and a peak of 35°C (95°F). The hotter month receives more rain, with 83 mm (3.3 in) falling over 13 days and a slightly higher humidity level of 84%. For a closer look at July's weather specifics, you can visit Haikou weather in July.
December and August exhibit strikingly different weather patterns. In December, temperatures range from a minimum of 7°C (45°F) to a maximum of 25°C (77°F), creating a mild and relatively pleasant climate with an average of 14°C (58°F). The month experiences about 49 mm (1.9 in) of precipitation over 9 days, and the humidity averages 79%, making it a bit damp but comfortable. In contrast, August boasts significantly warmer temperatures, ranging from a minimum of 25°C (76°F) to a peak of 35°C (95°F), with an average of 29°C (84°F). This month is also much wetter, receiving around 260 mm (10.2 in) of rain over 20 days, coupled with a higher humidity level of 82%. For a detailed look at what to expect during August, you can visit Haikou weather in August.
December and September present contrasting weather patterns. In December, temperatures range from a mild 7°C (45°F) at night to a comfortable 25°C (77°F) during the day, with an average temperature of 14°C (58°F). Precipitation is relatively low at 49 mm (1.9 in) over about 9 days, accompanied by a higher humidity level of 79%. In contrast, September experiences much warmer conditions, with nighttime lows around 20°C (68°F) and daytime highs peaking at 35°C (96°F), yielding an average temperature of 27°C (81°F). Rainfall is more significant, totaling 105 mm (4.1 in) over 15 days, and humidity is slightly lower at 70%. For more details, check out Haikou weather in September.
When comparing the weather in December and October, notable differences emerge. December sees cooler temperatures, ranging from a minimum of 7°C (45°F) to a maximum of 25°C (77°F), while October boasts warmer averages with nighttime lows of 16°C (60°F) and highs reaching up to 33°C (92°F). Precipitation is slightly lower in December, with about 49 mm (1.9 in) over 9 days, compared to October's 71 mm (2.8 in) spread over 12 days. Additionally, December has a higher humidity level at 79%, compared to October's 73%. For more details on October weather, you can visit Haikou weather in October.
In comparing the weather between November and December, December tends to be cooler with a minimum temperature of 7°C (45°F) and an average of 14°C (58°F), while November’s temperatures are generally higher, ranging from a minimum of 11°C (53°F) to an average of 19°C (67°F). November also boasts warmer maximum temperatures, reaching up to 28°C (83°F), compared to December's maximum of 25°C (77°F). Additionally, November experiences slightly more precipitation, with 65 mm (2.6 in) over 10 days, whereas December sees 49 mm (1.9 in) across 9 days. Humidity levels are relatively close, with November at 77% and December slightly higher at 79%. For more detailed information, you can visit Haikou weather in November.
As December rolls into Haikou, the weather takes on a unique charm compared to the balmy months preceding it. With cooler temperatures settling in, the average high dips to a comfortable 25°C while nights can get a bit brisk, revealing a refreshing contrast. This month also witnesses a slight uptick in rainfall, with 49 mm of precipitation creating a lush, green landscape that invites exploration. The humidity hangs around 79%, bringing a soft, tropical feel that softens the winter chill. If you’re looking for a delightful change of pace, December in Haikou offers a perfect blend of mild temperatures and occasional rain, making it a great time to experience the local culture and scenery. For more detailed insights, check out Haikou Climate.