December Weather in City of Westminster, United Kingdom

Last updated: March 17, 2025

December in the City of Westminster, United Kingdom, presents a winter tableau characterized by a range of temperatures and notable precipitation. The month sees a maximum temperature of 14°C (58°F), while the average hovers around 6°C (44°F), dipping to a bracing minimum of -4°C (24°F). Rainfall is a common occurrence, with approximately 84 mm (3.3 in) spread over 13 days, contributing to a high humidity level of 92%. This blend of cool temperatures and considerable moisture creates a quintessential winter atmosphere, making December a unique time to experience the charm of Westminster.

December Temperature in City of Westminster

In December, the City of Westminster experiences a notable shift in temperatures as winter settles in. With minimums dipping to around -4°C (24°F), the chilly air begins to dominate the month, setting a wintry tone. The average temperature hovers around 6°C (44°F), offering a brisk climate that can invigorate the senses. As the month progresses, maximum temperatures reach a moderate 14°C (58°F), hinting at the potential for slightly milder days amidst the cold. This pattern underscores a transition from the more temperate fall months, inviting both residents and visitors to embrace the festive spirit with warm attire and cozy settings. Overall, December in Westminster embodies a quintessential winter experience, blending the chill of the season with occasional glimpses of milder weather.

December Weather in City of Westminster: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in City of Westminster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414345495562656459534643
Data source: Temperature data for City of Westminster generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in City of Westminster

In December, the City of Westminster experiences a notable shift in precipitation, mirroring the wetness typically associated with winter. With 84 mm (3.3 inches) of rain falling over about 13 days, this month stands out as one of the wettest of the year, matching the rainfall peak seen in October. This consistent precipitation creates a gray, atmospheric backdrop for the festive season, as London’s rainy reputation solidifies. Compared to the dryer months of spring, December's increased rainfall serves as a reminder of the impending winter chill, making it a key moment in the annual weather cycle that shapes the character of the city throughout the year.

December Precipitation Trends in City of Westminster

The chart displays monthly precipitation patterns in City of Westminster, 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.
JanFebMarAprMayJunJulAugSepOctNovDec545354336277647045845284
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in City of Westminster

In the City of Westminster during the month of December, humidity levels peak at a notable 92%, mirroring the near-high of November. This trend reveals the region's characteristic winter chill, where moisture levels remain consistently high. As the year progresses from January through July, a gradual decline in humidity is observed, reaching a low of 71% in the summer months. However, as autumn transitions into winter, humidity once again climbs, highlighting Westminster's shift to a more humid and damp climate. This cyclical pattern underscores the city's moist environment, particularly during the colder season, making December distinctly chilly and damp for its residents and visitors alike.

December Average Humidity in City of Westminster

This chart illustrates the average monthly humidity levels in City of Westminster, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%79%81%71%76%82%91%92%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in City of Westminster

In December, the UV Index in the City of Westminster registers at a low level of 1, indicating a safe time for outdoor activities with minimal risk of harm from UV rays. This continues the trend observed in the previous months, particularly November, which also recorded a UV Index of 2, suggesting a gradual return to safer levels as winter approaches. As the year transitions from summer's very high UV levels in July and June to the more cautious December readings, residents can enjoy the cool winter air without the worry of sunburn, with a burn time of 45 minutes. For more insights on UV exposure throughout the year, visit City of Westminster UV Index.

Maximum UV Index Levels in City of Westminster for December

The chart shows the monthly maximum UV Index (UVI) for City of Westminster 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: City of Westminster 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 City of Westminster

December in the City of Westminster, United Kingdom, offers a modest cloaking of sunlight, providing just 109 hours for the month. This reflects a notable decline compared to the vibrant 404 hours of July, marking the height of summer. As the year progresses from the longer, sun-drenched days of mid-spring and summer, the diminishing daylight reveals a consistent trend of reduced sunshine in the latter months. December stands as the month of stark contrast, where the holiday spirit glimmers against the backdrop of shorter, darker days, culminating a year that varied widely from the 98 hours in January to peak summer warmth. As we gaze ahead, the whisper of spring promises longer days and brighter skies, following the retreat of winter's chill.

Monthly Sunshine Duration in City of Westminster: December Highlighted

The December sunshine duration represents the total number of hours City of Westminster 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.
JanFebMarAprMayJunJulAugSepOctNovDec98h148h210h319h398h389h404h368h300h241h144h109h
Data source: City of Westminster December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in City of Westminster During December

In December, the City of Westminster experiences a notable dip in sunshine, with only a 17% chance of clear skies. This trend marks one of the lowest points in the annual cycle, reflecting the transition from autumn to winter. Notably, the likelihood of sunny weather in December contrasts sharply with the levels seen in the spring months, such as April, where the chance of sunshine peaks at 49%. Following a gradual increase from the coldest winter months of January through March, December's forecast signals a retreat into the gloomier season, reminding residents that sunny days are increasingly scarce as the year draws to a close.

Percentage of Sunny Days in December in City of Westminster

The chart illustrates the percentage of sunny days in City of Westminster 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 City of Westminster experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%25%29%49%33%28%38%25%29%25%32%17%
Data source: City of Westminster December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in City of Westminster in December

In the City of Westminster, December marks the zenith of winter with only 7 hours of daylight, a significant dip from the 8 hours experienced in November. This decrease is part of a broader winter trend, as daylight hours steadily diminish from peak summer brightness in June, when the city enjoys up to 16 hours of sunlight. Throughout the year, daylight duration gradually increases from the depths of winter, starting with just 8 hours in January and reaching a delightfully longer 15 hours by May. As the seasons shift, Westminster transitions from the shorter days of winter, showcasing a rhythmic pattern of increasing light that culminates in the long, sunlit days of summer before once again tapering off into the cozy embrace of winter.

Average Daylight Hours in City of Westminster for December

The chart illustrates the variation in daylight duration in City of Westminster throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 23m9h 58m11h 55m13h 54m15h 38m16h 32m16h 3m14h 30m12h 35m10h 36m8h 50m7h 53m
Data source: City of Westminster daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in City of Westminster

As December arrives in the City of Westminster, the winds pick up with an average speed of 4.4 m/s (10 mph), matching the brisk gusts experienced in October and reflecting a notable uptick compared to the calmer months of summer. This increase in wind activity hints at the transition from the gentler breezes of late autumn, particularly seen in November's 3.8 m/s (8 mph). Throughout the year, Westminster’s winds exhibit a distinct pattern, peaking in early winter and remaining consistent even as temperatures drop. The comparative strength of December’s winds serves as a reminder of the changing seasons, inviting residents and visitors alike to bundle up while enjoying the vibrant atmosphere of the city as it embraces the festive spirit.

Average December Wind Speed in City of Westminster

The chart displays monthly wind speed patterns in City of Westminster, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.24.74.43.54.23.13.33.83.34.43.84.4 m/s
Data source: City of Westminster December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in City of Westminster Compares to Other Months

The weather in City of Westminster 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 City of Westminster and find detailed weather information for every month.

December and January weather in the City of Westminster show some similarities and slight variations. In December, temperatures range from a minimum of -4°C (24°F) to an average of 6°C (44°F), peaking at 14°C (58°F). The month experiences significant precipitation, totaling 84 mm (3.3 in) over 13 rainy days, accompanied by high humidity at 92%. In contrast, January sees a drop in average temperature to 5°C (41°F), with a minimum of -5°C (24°F) and a similar maximum of 14°C (58°F). Precipitation also decreases to 54 mm (2.1 in) over 10 days, while humidity remains slightly lower at 91%. For more detailed information, you can visit City of Westminster weather in January.

December and February exhibit notable differences in weather conditions in terms of temperature, precipitation, and humidity. In December, temperatures typically range from a minimum of -4°C (24°F) to a maximum of 14°C (58°F), with an average of 6°C (44°F). The month also experiences considerable precipitation at 84 mm (3.3 in) over approximately 13 days, accompanied by high humidity levels at 92%. Conversely, February presents slightly colder temperatures, with a minimum of -5°C (23°F) and a maximum of 18°C (65°F), while maintaining an average similar to December at 6°C (43°F). Precipitation in February decreases to 53 mm (2.1 in) over 11 days, and humidity levels are slightly lower at 89%. For a detailed look at the climate in February, visit the City of Westminster weather in February.

In December, temperatures are generally colder, with a minimum of -4°C (24°F) and a maximum of 14°C (58°F), whereas March sees a broader range, with temperatures dipping to -5°C (23°F) but reaching up to 22°C (71°F) on warmer days. There is also a notable difference in precipitation, with December receiving 84 mm (3.3 in) over 13 days, compared to March's 54 mm (2.1 in) across the same number of days. Humidity remains relatively high in both months, at 92% for December and slightly lower at 86% in March. For a closer look at March weather specifics, you can visit City of Westminster weather in March.

The weather in December is notably colder, with average temperatures ranging from a minimum of -4°C (24°F) to a maximum of 14°C (58°F), while April sees a milder range with a minimum of -2°C (29°F) and a maximum of 26°C (80°F). December experiences significantly more precipitation, totaling 84 mm (3.3 in) over about 13 days, compared to April’s lighter rainfall of 33 mm (1.3 in) over 8 days. Additionally, humidity levels are slightly higher in December at 92%, whereas April's humidity sits at 85%. For a deeper look into the April climate, you can refer to the details here: City of Westminster weather in April.

December and May present contrasting weather conditions. In December, temperatures can range from a chilly -4°C (24°F) at night to a mild 14°C (58°F) during the day, with an average of 6°C (44°F). The month experiences significant precipitation, totaling 84 mm (3.3 in) over approximately 13 days, accompanied by a high humidity level of 92%. In contrast, May offers a more pleasant climate with temperatures ranging from a minimum of 1°C (35°F) to a warm maximum of 25°C (78°F), averaging around 13°C (55°F). Precipitation is also lower in May, totaling 62 mm (2.5 in) across 11 days, with humidity decreasing to 79%. For further details on the typical weather in May, you can visit City of Westminster weather in May.

December and June present contrasting weather conditions. In December, temperatures can drop as low as -4°C (24°F), with an average of 6°C (44°F) and highs reaching 14°C (58°F). The month experiences substantial precipitation, totaling 84 mm (3.3 in) over approximately 13 days, accompanied by high humidity at 92%. In contrast, June enjoys milder temperatures, ranging from a minimum of 7°C (45°F) to a maximum of 31°C (89°F), with an average of 16°C (62°F). Precipitation is slightly lower at 77 mm (3.0 in) across about 9 days, and humidity is more comfortable at 80%. For more details, you can check the City of Westminster weather in June.

The weather in December and July presents a striking contrast. In December, temperatures range from a chilly -4°C (24°F) to a mild 14°C (58°F), with an average temperature of 6°C (44°F). The month experiences significant humidity at 92%, along with 84 mm (3.3 in) of precipitation over 13 days. In contrast, July boasts much warmer temperatures, ranging from a minimum of 9°C (49°F) to a scorching maximum of 36°C (96°F), with an average of 18°C (65°F). Despite July's higher temperatures, it has less humidity at 71% and experiences less precipitation, totaling 64 mm (2.5 in) over 11 days. For more details on the weather during this sunny month, you can visit City of Westminster weather in July.

December and August weather in the City of Westminster present a striking contrast. December experiences colder temperatures, with a minimum of -4°C (24°F) and an average of 6°C (44°F), while August enjoys a much warmer climate, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 34°C (93°F). In terms of precipitation, December sees more rainfall at 84 mm (3.3 in) over 13 days, compared to August's 70 mm (2.7 in) across 12 days. Additionally, December is characterized by high humidity at 92%, making the cold feel even more biting, whereas August's humidity is more moderate at 76%. For more detailed information, you can visit City of Westminster weather in August.

In December, the weather is significantly colder than in September, with average temperatures ranging from a chilly -4°C (24°F) to a mild 14°C (58°F). The month experiences more precipitation, totaling 84 mm (3.3 in) over approximately 13 days, resulting in a damp atmosphere with high humidity at 92%. In contrast, September boasts more moderate temperatures, with a minimum of 4°C (39°F) and a pleasant average of 15°C (59°F), peaking at a warm 28°C (83°F). Precipitation is lower in September, with about 45 mm (1.8 in) occurring over 10 days, and the humidity is slightly less at 82%. For more detailed insights, you can visit City of Westminster weather in September.

When comparing the weather in December to October, we see a marked shift in temperatures and conditions. December experiences colder temperatures, with a minimum of -4°C (24°F) and an average of 6°C (44°F), in contrast to October’s milder range, where temperatures dip only to a minimum of 1°C (34°F) and average around 12°C (54°F). Both months receive the same amount of rainfall, approximately 84 mm (3.3 in), but December has precipitation spread over 13 days, compared to October's 12 days. Additionally, December has a slightly higher humidity level at 92%, compared to October's 90%. For more detailed insights about October's weather, you can check City of Westminster weather in October.

In comparing the weather of December and November, December tends to be slightly colder, with average temperatures ranging from a minimum of -4°C (24°F) to a maximum of 14°C (58°F), compared to November's range of -2°C (29°F) to 16°C (62°F). Additionally, December experiences more precipitation, accumulating 84 mm (3.3 in) over about 13 days, while November sees less with 52 mm (2.0 in) over 11 days. Despite the increased rainfall in December, both months maintain a high humidity level of 92%. For more detailed information, you can visit City of Westminster weather in November.

Compare City of Westminster's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in City of Westminster

As December arrives in the City of Westminster, the weather shifts dramatically, painting a stark contrast to the milder months. With an average temperature around 6°C (44°F), the chill sets in, making it a time for cozy layers and warm drinks. This month is marked by heightened humidity and notable precipitation, averaging 84 mm over 13 days, creating a damp atmosphere that defines the season. While the highs reach a mild 14°C (58°F), it’s the biting lows that remind us winter is here, occasionally dipping to -4°C (24°F). For those seeking to understand the climate dynamics that shape this vibrant city, a deeper dive can be found at City of Westminster Climate.