December Weather in Bangor, United Kingdom

Last updated: March 17, 2025

In Bangor, United Kingdom, December ushers in a chilly winter atmosphere characterized by an average temperature of 7°C (45°F), with daytime highs reaching up to 13°C (56°F) and occasional lows dipping to a brisk -1°C (30°F). This month also witnesses significant precipitation, accumulating to about 129 mm (5.1 in) over approximately 20 days, contributing to a notably high humidity level of 89%. Dress warmly as you'll likely encounter a mix of overcast skies and rain, showcasing the season's hallmark traits.

December Temperature in Bangor

In December, Bangor, United Kingdom, experiences a gradual decline in temperatures as winter settles in. With an average low of -1°C (30°F) and an average high of 13°C (56°F), the month is characterized by chilly yet mild weather compared to the colder months that precede it. Typically, December will have temperatures lingering around the 7°C (45°F) mark, making it one of the cooler months but not the harshest. This gentle transition into winter invites cozy gatherings and the festive spirit, as the city embraces the holiday season against a backdrop of crisp, refreshing air. As daylight hours dwindle, the overall atmosphere in Bangor becomes both inviting and serene, perfect for enjoying the charm of the season.

December Weather in Bangor: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Bangor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434445485358616057524745
Data source: Temperature data for Bangor 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 Bangor

In December, Bangor, United Kingdom, experiences its wettest month of the year, with precipitation reaching 129 mm (5.1 in) over a notably high 20 rainy days. This trend of increased rainfall correlates with a gradual buildup throughout the fall, where consistent storms contribute to the overall wet conditions. Following November’s substantial 111 mm and an average of 19 rainy days, December's precipitation signals a peak in the seasonal rainfall, hinting at the area's climate dynamics. As the year closes, residents and visitors alike should prepare for a very soggy start to winter, marking December as a time when Bangor truly embraces its reputation for robust and persistent rain.

December Precipitation Trends in Bangor

The chart displays monthly precipitation patterns in Bangor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec771031045571918210598128111129
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bangor

In December, Bangor experiences a notable consistency in its humidity levels, with 89% humidity recorded. This figure is slightly lower than the peak seen in November at 91%, yet maintains a trend that reflects the town's generally high moisture content throughout the fall and winter months. As we transition from October's 90%, the humidity dips slightly, echoing the trend of gradually decreasing humidity as winter intensifies. Throughout the year, Bangor's humidity peaks in the late autumn months, typically hovering in the high 80s and low 90s, which suggests a climate that is not only cool but also richly saturated with moisture—creating a unique atmospheric experience.

December Average Humidity in Bangor

This chart illustrates the average monthly humidity levels in Bangor, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%85%79%81%78%79%85%90%91%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bangor

In Bangor, United Kingdom, the UV Index during December reflects a return to the lower values seen at the start of the year, registering at 1 on the scale. This indicates a low exposure category, with a safe burn time of 45 minutes. Throughout the year, the UV Index varies significantly, peaking at 8 during the summer months of June and July when sun protection is crucial. As the seasons shift, the UV Index diminishes from a moderate 5 in September to a low 2 in November, and finally hitting the year's lowest point in December. This trend underscores the importance of monitoring UV levels year-round, highlighting how winter months offer a reprieve from the intense rays of summer. For more details on UV levels throughout the year, check out Bangor UV Index.

Maximum UV Index Levels in Bangor for December

The chart shows the monthly maximum UV Index (UVI) for Bangor 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Bangor 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 Bangor

As December unfolds in Bangor, the days grow shorter, contributing to a notable dip in sunshine hours, with the month averaging just 109 hours. This decline is part of a broader seasonal trend where the year commences with minimal sunlight in January, peaking in the vibrant spring and summer months of May through August, which bask in over 400 hours of daylight. The gradual descent begins in September, continuing to taper through autumn, arriving at November's meager 126 hours before December settles in. Despite the dwindling hours, the soft glow of winter sunlight offers a tranquil beauty, reminding us that even in the darkest months, glimpses of brightness still grace Bangor's skies.

Monthly Sunshine Duration in Bangor: December Highlighted

The December sunshine duration represents the total number of hours Bangor 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.
JanFebMarAprMayJunJulAugSepOctNovDec93h162h228h335h415h404h421h383h315h238h126h109h
Data source: Bangor December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bangor During December

In December, Bangor, United Kingdom, experiences a 23% chance of sunny weather, indicating a slight uptick from the gloomier months of late autumn, particularly October and November, which hover around 17% and 19%, respectively. This trend reveals a modest increase in sunshine as the year wraps up, likely influenced by variable winter weather patterns. However, with chances still below a quarter, those hoping for a bright holiday season should keep an umbrella handy. Interestingly, while winter months typically offer less sunshine overall, December's outlook remains consistent with early winter patterns seen in January and February, where chances linger around the low 20s, promising some glimmers of hope amid the chill.

Percentage of Sunny Days in December in Bangor

The chart illustrates the percentage of sunny days in Bangor 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 Bangor experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%25%25%46%30%25%35%24%20%17%19%23%
Data source: Bangor December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bangor in December

In Bangor, United Kingdom, December marks the transition into the darkest days of the year, with daylight lasting just 7 hours—the shortest duration of any month. As the year progresses, daylight steadily increases from 8 hours in January to a peak of 16 hours in both June and July, signaling the height of summer. Following this climax, the sunlight begins to wane again, dropping to 14 hours in August and continuing its decline through autumn. By November, daylight reduces back to 8 hours, mirroring the start of the year, creating a clear cyclical pattern of increasing and decreasing daylight that characterizes this charming coastal town's seasonal rhythm.

Average Daylight Hours in Bangor for December

The chart illustrates the variation in daylight duration in Bangor throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 8m9h 50m11h 54m14h 1m15h 53m16h 52m16h 20m14h 39m12h 37m10h 31m8h 37m7h 36m
Data source: Bangor daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Bangor

As December rolls in, the winds of Bangor, United Kingdom, come to life with an average speed of 5.0 m/s (11 mph), marking a shift from the calmness of summer months. This slight uptick in wind velocity compared to November's 4.8 m/s (11 mph) highlights the transition into winter, where gusts grow stronger and more invigorating. While December's winds are certainly brisk, they remain moderate when placed alongside the earlier months of the year; notably, January and February often see higher winds with averages of 4.6 m/s (10 mph) and 5.8 m/s (13 mph), respectively. As the year draws to a close, the December breeze offers a refreshing chill, hinting at the more turbulent gusts yet to come in the new year.

Average December Wind Speed in Bangor

The chart displays monthly wind speed patterns in Bangor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.65.85.23.34.03.82.73.83.35.54.85.0 m/s
Data source: Bangor December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Bangor Compares to Other Months

The weather in Bangor changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Bangor and find detailed weather information for every month.

December and January in Bangor present a distinct yet somewhat similar winter climate. December experiences slightly milder temperatures, with an average of 7°C (45°F) and a maximum of 13°C (56°F), while January sees a slight dip, averaging 6°C (43°F) with a max of 14°C (57°F). Precipitation is notably higher in December, recording 129 mm (5.1 in) over 20 days, compared to January's 77 mm (3.0 in) spread across 13 days. Both months maintain a high humidity level of 89%, contributing to the damp, chilly atmosphere typical of the season. For a more detailed insight, check out Bangor weather in January.

December typically presents a chillier atmosphere than February, with average temperatures ranging from a minimum of -1°C (30°F) to a maximum of 13°C (56°F), while February sees slightly lower minimums at -4°C (26°F) but can reach higher maximums of 18°C (65°F). Both months experience significant precipitation, with December averaging 129 mm (5.1 in) over 20 days, compared to February’s 103 mm (4.1 in) across 16 days. Humidity levels are quite similar, with December at 89% and February slightly lower at 88%. For more specific details on February weather, you can check out Bangor weather in February.

December weather is characterized by a milder average temperature of 7°C (45°F) but can experience lows dropping to -1°C (30°F). The month sees significant precipitation, totaling 129 mm (5.1 in) over approximately 20 days, resulting in a high humidity level of 89%. In contrast, March tends to be cooler with a minimum temperature of -5°C (23°F) but can reach a maximum of 18°C (65°F). Precipitation decreases slightly to 104 mm (4.1 in) over about 18 days, with a humidity level of 86%. For a detailed comparison of weather trends, you can also check Bangor weather in March.

December weather is characterized by cooler temperatures, with a minimum of -1°C (30°F) and an average of 7°C (45°F), reaching a maximum of 13°C (56°F). It is also quite wet, with 129 mm (5.1 in) of precipitation over approximately 20 days, contributing to a high humidity of 89%. In contrast, April brings milder temperatures, maintaining a minimum of -1°C (31°F) but averaging 9°C (48°F) and peaking at a comfortable 22°C (72°F). The month is significantly drier, with just 55 mm (2.2 in) of rainfall across 11 days and a slightly lower humidity at 84%. For more details about the weather in April, you can visit Bangor weather in April.

December weather is characterized by cooler temperatures, with averages around 7°C (45°F) and maximums reaching 13°C (56°F). The month experiences high humidity at 89% and significant precipitation, totaling 129 mm (5.1 in) over about 20 days. In contrast, May brings a warmer atmosphere, with average temperatures around 12°C (53°F) and maximums soaring up to 28°C (82°F). While May sees less rainfall, with 71 mm (2.8 in) spread over 12 days, the humidity drops to 79%. For more detailed insights, check out Bangor weather in May.

December and June present notably different weather conditions. In December, temperatures range from a chilly -1°C (30°F) at night to a mild 13°C (56°F) during the day, with an average of 7°C (45°F). The month experiences significant precipitation, totaling 129 mm (5.1 in) over about 20 days, and high humidity levels of 89%. In contrast, June offers a much warmer climate, with night temperatures starting at 5°C (41°F) and daytime highs reaching 29°C (84°F), averaging 15°C (59°F). Rainfall is less frequent, totaling 91 mm (3.6 in) across 14 days, and humidity is lower at 81%. For a more detailed look at June’s climate, visit Bangor weather in June.

December weather is characterized by much colder temperatures, with minimums dropping to -1°C (30°F) and average highs reaching only 13°C (56°F). This month also sees significant rainfall, accumulating 129 mm (5.1 in) over about 20 days, accompanied by high humidity levels of 89%. In contrast, July offers a much milder climate, where minimum temperatures rarely fall below 7°C (45°F) and average highs can reach up to 29°C (85°F). Rainfall decreases to 82 mm (3.2 in) across roughly 15 days, and the humidity is lower at 78%. For more information on the climate during this summer month, check out Bangor weather in July.

December and August display stark contrasts in weather patterns. In December, temperatures range from a chilly -1°C (30°F) to a mild 13°C (56°F), with an average of 7°C (45°F). The month is characterized by high humidity at 89% and significant precipitation, totaling 129 mm (5.1 in) over about 20 days. In contrast, August boasts milder conditions with temperatures fluctuating between 8°C (46°F) and 26°C (79°F), averaging 16°C (61°F). This summer month experiences less rainfall, approximately 105 mm (4.1 in), spread across 19 days, and a more comfortable humidity level of 79%. For more detailed weather information, check out Bangor weather in August.

In December, the weather is noticeably colder, with average temperatures ranging from a minimum of -1°C (30°F) to a maximum of 13°C (56°F), while September enjoys milder temperatures, with averages ranging from a minimum of 3°C (38°F) to a maximum of 27°C (81°F). December is also characterized by higher precipitation, totaling 129 mm (5.1 in) over about 20 days, compared to September's 98 mm (3.9 in) over 15 days. Humidity levels are slightly higher in December at 89%, compared to 85% in September. For more details on September weather, you can visit Bangor weather in September.

In comparing the weather between October and December, we find distinct differences in temperature and overall conditions. December experiences cooler temperatures with a minimum of -1°C (30°F) and a maximum of 13°C (56°F), while October boasts a milder range with minimums of -2°C (29°F) and maximums reaching 22°C (71°F). Although both months receive similar amounts of precipitation—around 129 mm (5.1 in)—December has slightly more rainy days, totaling 20 compared to October's 18 days. Both months also exhibit high humidity levels, with December at 89% and October at 90%. To learn more about October's weather specifics, you can visit Bangor weather in October.

December's weather is slightly cooler and wetter than November's, with average temperatures ranging from a minimum of -1°C to a maximum of 13°C compared to November's range of -1°C to 15°C. While both months experience similar minimum temperatures, December's average drops to 7°C, making it feel chillier overall. Additionally, December brings more precipitation, totaling 129 mm over 20 days, compared to November's 111 mm over 19 days. Humidity levels remain high in both months, with December at 89% and November at 91%. For a more detailed look at November's weather patterns, you can check out Bangor weather in November.

Compare Bangor's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Bangor

As December unfolds in Bangor, the weather presents a distinct contrast to the milder months of autumn. With a noticeable drop in temperatures and increased precipitation, residents can expect an average chill that makes cozy indoor activities irresistible. The month often embraces a damp atmosphere, characterized by high humidity and frequent rain, typical of winter's arrival. This shift not only influences daily routines but also transforms the landscape into a picturesque winter scene. For a more detailed understanding of Bangor's climate throughout the year, check out Bangor Climate.