December Weather in Hong Kong, Hong Kong

Last updated: August 21, 2025

December in Hong Kong showcases a delightful transition into winter, boasting a maximum temperature of 26°C (78°F) and a refreshing average of 18°C (65°F). As the month progresses, temperatures dip to a minimum of 10°C (49°F), providing a pleasant chill in the air. While the city experiences an average of 31 mm (1.2 in) of rainfall over just four rainy days, the humidity hovers around 69%, creating a comfortable atmosphere perfect for exploring the vibrant streets and festive celebrations.

December Temperature in Hong Kong

As December settles in Hong Kong, a welcomed chill begins to embrace the city, with temperatures ranging from a minimum of 10°C (49°F) to a maximum of 26°C (78°F). The average temperature hovers around 18°C (65°F), offering a refreshing break from the preceding months' heat. Compared to the warmer summer months, December’s mild climate creates an inviting atmosphere for outdoor activities and festive celebrations. With the gradual decline in temperatures, visitors can enjoy the city's vibrant holiday lights and markets, making it a delightful time to explore Hong Kong's rich culture and culinary delights amidst cooler but comfortable weather.

December Weather in Hong Kong: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Hong Kong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hong Kong, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec636369737983848382787265
Data source: Temperature data for Hong Kong generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Hong Kong

In December, Hong Kong experiences a noticeable shift in precipitation patterns, as the city wraps up the year. With an average rainfall of 31 mm (1.2 in) spread over just 4 days, December stands out for its relatively dry conditions compared to the lush summer months. This decline in precipitation aligns with a general trend observed from October to December, where rainfall drops significantly from 189 mm (7.4 in) in October to November's 36 mm (1.4 in) and finally to December’s modest totals. As temperatures cool and the festive season approaches, residents can expect a marked decrease in rainy days, making this a drier and more temperate time of year in vibrant Hong Kong.

December Precipitation Trends in Hong Kong

The chart displays monthly precipitation patterns in Hong Kong, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Hong Kong, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec215260931713252193842231893631
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hong Kong

As December arrives in Hong Kong, the humidity gently stabilizes at 69%, marking a slight increase from the cooler months of November and October, both hovering around 64%. This gradual rise reflects a trend as the city transitions from the drier autumn season into winter. Notably, December's humidity is lower than the sultry peaks of July and August, where levels soared to an impressive 88%. Despite this, the month still embraces a comfortable range, offering a refreshing respite from the muggy summer months while hinting at the lingering moisture that characterizes Hong Kong’s unique climate year-round.

December Average Humidity in Hong Kong

This chart illustrates the average monthly humidity levels in Hong Kong, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Hong Kong is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec64%68%73%71%79%77%88%88%75%65%64%69%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hong Kong

As December rolls around in Hong Kong, the UV Index drops to 7, reflecting a shift to a high exposure category. This is a slight decline from the preceding months, where the Index reached its peak at 14 in May. Interestingly, while the burn time decreases significantly in the summer months, December allows for a more forgiving 25 minutes of sun exposure before risking skin damage. Overall, this highlights a seasonal pattern where the UV Index steadily declines from the extreme levels seen in the summer, bringing a more moderate ultraviolet environment as the year comes to a close. For more detailed information, visit Hong Kong UV Index.

Maximum UV Index Levels in Hong Kong for December

The chart shows the monthly maximum UV Index (UVI) for Hong Kong in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Hong Kong typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121214131313121197
Data source: Hong Kong December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

December Sunshine in Hong Kong

In December, Hong Kong basks in a delightful embrace of 264 hours of sunshine, a fitting end to a year marked by varied sunlight patterns. The winter month sees a modest dip from the vibrant autumn days of October and November, but it still stands proud compared to the early months of the year. February kicks off with 251 hours, while July shines the brightest, boasting an impressive 323 hours of sun. The gradual transition into the shorter days of December reflects a consistent trend of waxing and waning daylight throughout the year, underscoring the city's ability to maintain a warm and inviting atmosphere even in the cooler months. As the sun sets on the year, Hong Kong's winter sun invites both residents and visitors to cherish the vibrant energy it offers.

Monthly Sunshine Duration in Hong Kong: December Highlighted

The December sunshine duration represents the total number of hours Hong Kong experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec216h251h274h263h301h274h323h280h288h280h262h264h
Data source: Hong Kong December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hong Kong During December

In December, Hong Kong experiences a 50% chance of sunny weather, marking a significant shift compared to the humid and rainy months of summer, particularly June (12%) and August (15%). As the year winds down, the likelihood of sunshine increases from November's robust 62%, reflecting a gradual transition into more stable, cooler weather. This month stands out as one of the brighter periods, especially when juxtaposed with the gloomy rain of July (31%) and August. With the sun making its presence felt, December offers a delightful blend of mild temperatures and sunny spells, inviting both locals and tourists to enjoy the vibrant atmosphere of the city during the festive season.

Percentage of Sunny Days in December in Hong Kong

The chart illustrates the percentage of sunny days in Hong Kong throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Hong Kong experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec61%60%43%42%30%12%31%15%45%36%62%50%
Data source: Hong Kong December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hong Kong in December

As December rolls in, Hong Kong experiences a return to shorter days, boasting about 10 hours of daylight. This annual pattern reveals a gradual shift from the longer, sun-drenched days of summer—where daylight extends up to 13 hours in May through July—to the brisk embrace of winter. After a solid stretch of 12-hour days in the spring and early autumn, daylight diminishes as the year nears its end. By February, daylight begins to lengthen again, leading to the promising promise of brighter days ahead as spring approaches. This cyclical dance between light and dark not only marks the passage of time but also enriches the unique charm of Hong Kong's vibrant urban landscape.

Average Daylight Hours in Hong Kong for December

The chart illustrates the variation in daylight duration in Hong Kong throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 55m11h 23m12h 1m12h 39m13h 11m13h 27m13h 19m12h 51m12h 14m11h 36m11h 3m10h 46m
Data source: Hong Kong daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Hong Kong

As December rolls into Hong Kong, the average wind speed picks up to 5.6 m/s (12 mph), marking a noticeable increase from the lower summer averages. While the earlier months of the year experience fluctuating breezes, with April and July dipping to around 4.6 and 3.8 m/s respectively, December’s winds herald the arrival of the cooler season. Notably, the wind speed peaks in October at 6.4 m/s (14 mph) before settling back, suggesting a shift in weather patterns as winter approaches. This increase in December not only brings a refreshing chill but also enhances the vibrant atmosphere of the city, making it an invigorating time to experience Hong Kong’s bustling streets.

Average December Wind Speed in Hong Kong

The chart displays monthly wind speed patterns in Hong Kong, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.14.44.74.63.74.23.83.43.26.44.95.6 m/s
Data source: Hong Kong December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Hong Kong Compares to Other Months

Weather in Hong Kong varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hong Kong, focusing on differences in temperature, rainfall, humidity, and UV levels.

In December, the weather tends to be slightly warmer with average temperatures ranging from a minimum of 10°C (49°F) to a maximum of 26°C (78°F), accompanied by a total precipitation of 31 mm (1.2 in) over four days and a humidity level of 69%. In contrast, January sees a slight dip in temperature, with a minimum of 8°C (46°F) and a maximum of 24°C (75°F), while precipitation decreases to 21 mm (0.8 in) over the same number of days. Additionally, the humidity drops to 64%, making January a bit cooler and drier than December. For more detailed information, you can visit Hong Kong weather in January.

December and February in Hong Kong showcase mild winter temperatures, but with some distinct differences. In December, temperatures range from a minimum of 10°C (49°F) to a maximum of 26°C (78°F), averaging around 18°C (65°F) with relatively low rainfall of 31 mm (1.2 in) across about 4 days. In contrast, February sees slightly cooler temperatures, dipping to a minimum of 7°C (45°F) and peaking at 24°C (76°F), with a similar average of 17°C (64°F). However, February experiences increased precipitation, totaling 52 mm (2.0 in) over approximately 7 days, resulting in higher humidity at 68%. For a more detailed look at February weather, visit Hong Kong weather in February.

December and March showcase notable differences in weather patterns. In December, temperatures range from a minimum of 10°C (49°F) to a maximum of 26°C (78°F), averaging around 18°C (65°F). This month experiences relatively low precipitation of 31 mm (1.2 in) over just 4 days, with a humidity level of 69%. In contrast, March sees slightly warmer conditions, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 27°C (80°F), averaging 21°C (70°F). However, this month also brings increased precipitation, totaling 60 mm (2.4 in) over 10 days, along with a humidity level of 73%. For a more detailed look into the weather, check out Hong Kong weather in March.

December and April in Hong Kong present distinct weather characteristics. In December, temperatures range from a comfortable 10°C (49°F) to a warm 26°C (78°F), with an average of 18°C (65°F). The month experiences relatively low precipitation, with only 31 mm (1.2 in) over about 4 days, and humidity levels hover around 69%. In contrast, April sees milder temperatures, with a minimum of 14°C (58°F) and a maximum of 29°C (85°F), averaging 23°C (73°F). This month is significantly wetter, accumulating 93 mm (3.7 in) of rain over 12 days and slightly higher humidity at 71%. For more details on April's weather in Hong Kong, check out Hong Kong weather in April.

The weather in December features milder temperatures, with a minimum of 10°C (49°F) and an average of 18°C (65°F), peaking at a comfortable 26°C (78°F). This month sees modest precipitation of 31 mm (1.2 in) over just four days, accompanied by a humidity level of 69%. In contrast, May experiences significantly warmer weather, with minimum temperatures starting at 18°C (64°F) and averaging 26°C (79°F), reaching a high of 33°C (92°F). However, May is also much rainier, receiving 171 mm (6.7 in) of precipitation across 18 days and a higher humidity of 79%. For more detailed information, you can check Hong Kong weather in May.

December and June present stark contrasts in weather conditions. In December, temperatures range from a mild minimum of 10°C (49°F) to a comfortable maximum of 26°C (78°F), with an average of 18°C (65°F). The month sees relatively low precipitation at 31 mm (1.2 in) over just 4 days, while humidity sits at a moderate 69%. In contrast, June brings significantly warmer temperatures, with minimums starting at 24°C (76°F) and peaking at 33°C (91°F), averaging around 28°C (83°F). Rainfall is abundant in June, totaling 325 mm (12.8 in) across 24 days, and humidity increases to 77%, contributing to a much more tropical feel. For more detailed information on June weather patterns, visit Hong Kong weather in June.

December and July present markedly different weather conditions. In December, temperatures are milder, with a minimum of 10°C (49°F) and an average of 18°C (65°F), making it a comfortable month for outdoor activities. The month experiences relatively low precipitation, totaling 31 mm (1.2 in) over just four days, with a humidity level of 69%. In contrast, July features much warmer temperatures, with a minimum of 25°C (78°F) and an average of 29°C (84°F), peaking at 33°C (92°F). This month is characterized by heavy rainfall, accumulating 219 mm (8.6 in) across 24 days, along with higher humidity at 88%. For more details on the weather specifically in July, you can visit Hong Kong weather in July.

December and August present contrasting weather patterns. In December, temperatures are milder, with a minimum of 10°C (49°F) and a maximum of 26°C (78°F), resulting in an average temperature of 18°C (65°F). The month sees relatively low precipitation, with 31 mm (1.2 in) over just 4 days and a humidity level of 69%. In contrast, August is significantly warmer, featuring a minimum temperature of 26°C (78°F) and reaching up to 34°C (93°F), with an average of 28°C (83°F). This month is also much wetter, experiencing 384 mm (15.1 in) of rainfall spread over 25 days, accompanied by high humidity at 88%. For further details, check out Hong Kong weather in August.

When comparing the weather in December and September, there are notable differences in temperature and precipitation. December typically experiences milder temperatures, ranging from a minimum of 10°C (49°F) to a maximum of 26°C (78°F), with an average of 18°C (65°F). This month also sees relatively low precipitation of 31 mm (1.2 in) over just four days, coupled with a humidity level of 69%. In contrast, September is much warmer, with temperatures peaking at a maximum of 32°C (91°F) and averaging 28°C (83°F), while the minimum sits at 24°C (76°F). However, September is significantly wetter, receiving 223 mm (8.8 in) of rainfall over 22 days, and a humidity level of 75%. For more details on the weather specifics, you can check Hong Kong weather in September.

In comparing the weather between December and October, we see notable differences in temperature and precipitation. December offers a cooler climate with minimum temperatures around 10°C (49°F) and an average of 18°C (65°F), while October tends to be much warmer, with a minimum of 17°C (64°F) and an average high of 26°C (78°F). Furthermore, October experiences significantly more rain, with 189 mm (7.4 in) of precipitation over 10 days, compared to December's much lighter rainfall of 31 mm (1.2 in) over just 4 days. Interestingly, humidity levels are quite similar, with December at 69% and October slightly lower at 65%. For more details on October's weather, you can check Hong Kong weather in October.

In comparing the weather of December to November, December experiences slightly cooler temperatures, with a minimum of 10°C (49°F) and an average of 18°C (65°F), compared to November's minimum of 16°C (60°F) and average of 22°C (72°F). While December reaches a maximum of 26°C (78°F), November is a bit warmer, peaking at 28°C (82°F). Precipitation levels are relatively close, with December recording 31 mm (1.2 in) over four days and November slightly higher at 36 mm (1.4 in) over the same number of days. Humidity in December averages 69%, slightly higher than November's 64%. For more detailed information, check Hong Kong weather in November.

Compare Hong Kong's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Hong Kong

As December unfolds in Hong Kong, visitors can expect a refreshing change from the city's typically warmer months. The temperatures become pleasantly cooler, hovering around an inviting average that makes outdoor exploration more enjoyable. With only a few rainy days, the humidity begins to dip, creating a comfortable atmosphere perfect for holiday festivities. This transition to winter not only brings a significant drop in temperature but also transforms the vibrant city into a winter wonderland, making December a unique and delightful time to visit. For a deeper understanding of what to expect throughout the year, check out Hong Kong Climate.