December Weather in Windsor, United Kingdom

Last updated: March 17, 2025

In December, Windsor, United Kingdom experiences a blend of chilly temperatures and frequent rainfall, creating a distinctive winter atmosphere. The maximum temperature hovers around 14°C (58°F), while the average settles at a cool 6°C (44°F), dipping to a brisk minimum of -4°C (24°F). With 82 mm (3.2 in) of precipitation over 14 days, the month is characterized by high humidity levels at 92%, contributing to a damp but picturesque setting. Visitors can expect a crisp, wintry experience amidst the historical charm of Windsor, perfect for cozy indoor activities or brisk outdoor strolls.

December Temperature in Windsor

In Windsor, United Kingdom, December ushers in the winter chill, with temperatures typically ranging from a brisk -4°C (24°F) at night to a daytime average of 6°C (44°F). This month's weather hints at a clear transition as it aligns closely with November's cooler trends but starts to set the stage for the frosty January ahead. The maximum temperature hovers around 14°C (58°F), showcasing occasional mild days amidst the cold. As Windsor wraps itself in festive cheer, visitors can expect to experience a crisp yet charming ambiance, typical of a traditional English winter.

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

The chart illustrates December temperature patterns in Windsor, 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 Windsor 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 Windsor

In December, Windsor, United Kingdom, experiences a notable uptick in precipitation, with 82 mm (3.2 in) recorded—reflecting a significant increase compared to many other months. This increase is coupled with a rise in the number of rain-soaked days, reaching 14 days, which contributes to a rather damp finale to the year. December's precipitation often surpasses that of earlier months, as its totals rival October's high average of 86 mm. This trend highlights Windsor's transition into winter, where consistent rainfall becomes more common, fostering a sense of coziness as the community prepares for the holiday season amidst the drizzly backdrop.

December Precipitation Trends in Windsor

The chart displays monthly precipitation patterns in Windsor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec525255336374646745865382
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Windsor

December in Windsor, United Kingdom, wraps up the year with high humidity levels averaging around 92%. This marks a continuation of the moist trend established in the preceding months, particularly November, which also recorded a humidity of 92%. As the year transitions from the drier summer months of July and August, where humidity dipped to 71% and 76% respectively, the winter months consistently see a rise in moisture content in the air. The late autumn to winter transition highlights a significant increase, reflecting the region's characteristic dampness. With December’s humidity paralleling that of November, residents can expect a cold and moist atmosphere, typical of the seasonal change in Windsor.

December Average Humidity in Windsor

This chart illustrates the average monthly humidity levels in Windsor, 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 Windsor

In Windsor, the December UV Index reflects a return to lower levels, marked by a UV Index of 1, which categorizes sun exposure as low. This signifies a welcome reprieve from the higher indices seen in the summer months, where values peaked at 8 in both June and July, requiring caution with a burn time of just 15 minutes. In contrast, the winter months emphasize safe outdoor activity with burn times extending to 45 minutes in both January and December. The steady decline in UV levels from May’s high of 7 to the low of 1 in December highlights the distinct seasonal variations in sun exposure, making it essential to monitor local conditions. For more details, check out the Windsor UV Index.

Maximum UV Index Levels in Windsor for December

The chart shows the monthly maximum UV Index (UVI) for Windsor 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: Windsor 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 Windsor

In Windsor, the December sun brings a gentle glow, with the month averaging 109 hours of sunshine. This marks a decline from the bright heights of summer, where July enjoys the most sunlight at an impressive 404 hours. As winter approaches, the daylight diminishes, transitioning from the lush 398 hours of May to the crisp 144 hours in November. December's sunshine acts as a soft reminder of the seasonal change, nestled among a year that peaks in warmth and vibrancy during the long summer days. Even as the light wanes, the charm of Windsor remains, inviting residents and visitors alike to enjoy its serene winter scenery.

Monthly Sunshine Duration in Windsor: December Highlighted

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

Chance of Sun in Windsor During December

In Windsor, UK, the likelihood of sunny weather in December is relatively low, with only a 17% chance of sunshine. This trend reflects a gradual decrease in sunshine probability as the year comes to a close, dipping from 32% in November to 50% in April, marking December as one of the cloudier months. While late spring and summer months tend to offer more sunshine, December remains entrenched in winter's grasp, making it a time when residents should brace for more overcast skies and frost rather than sun-kissed afternoons.

Percentage of Sunny Days in December in Windsor

The chart illustrates the percentage of sunny days in Windsor 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 Windsor experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%25%29%50%33%27%38%24%28%26%32%17%
Data source: Windsor December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Windsor in December

In Windsor, United Kingdom, December marks the shortest days of the year, with only 7 hours of daylight. This gradual decline begins in November and is part of a broader winter pattern, where daylight reaches its minimum before starting to increase again as spring approaches. As the months progress from January to March, daylight steadily increases, with increments that reflect the lengthening days of spring and summer. After the peak of 16 hours in June and July, daylight begins to taper off again, leading back into the cozy embrace of winter. The cyclical rhythm of daylight in Windsor not only invites seasonal changes but also sets the stage for the festive spirit that December embodies, as residents look forward to the returning light in the new year.

Average Daylight Hours in Windsor for December

The chart illustrates the variation in daylight duration in Windsor throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 24m9h 58m11h 55m13h 54m15h 38m16h 32m16h 3m14h 30m12h 35m10h 36m8h 50m7h 53m
Data source: Windsor daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Windsor

As December settles in Windsor, the winds pick up slightly, with an average speed of 4.5 m/s (10 mph), presenting a refreshing shift as the year draws to a close. This month mirrors the gustier tones of earlier winter months like January and October, which also boast similar wind speeds, while leaving behind the calmer breezes of June and July. Throughout the year, the wind dynamics show a gentle ebb and flow, with February leading with the highest average in spring, yet December's winds carry a crisp chill that invigorates the festive spirit. As the season embraces colder temperatures, the consistent wind patterns remind us of the enduring charm of Windsor’s winter landscape.

Average December Wind Speed in Windsor

The chart displays monthly wind speed patterns in Windsor, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.34.84.43.54.33.23.33.83.34.43.94.5 m/s
Data source: Windsor December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Windsor Compares to Other Months

The weather in Windsor 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 Windsor and find detailed weather information for every month.

December and January both present cool temperatures, but January tends to be slightly colder overall. In December, the minimum temperature hovers around -4°C (24°F), while January dips to a minimum of -5°C (23°F). The average temperatures remain close, with December averaging 6°C (44°F) compared to January’s 5°C (41°F). Notably, December experiences more precipitation, with 82 mm (3.2 in) over 14 days, while January sees less rain, totaling 52 mm (2.1 in) across only 9 days. Humidity levels remain high in both months, with December at 92% and January slightly lower at 91%. For more specific details on January weather patterns, visit Windsor weather in January.

December and February present distinct, yet somewhat similar, weather patterns. In December, temperatures range from a minimum of -4°C (24°F) to a maximum of 14°C (58°F), with an average of around 6°C (44°F). The month sees significant precipitation, totaling 82 mm (3.2 in) over about 14 days, while humidity levels are high at 92%. In contrast, February experiences slightly cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 18°C (65°F), maintaining the same average of 6°C (43°F). However, February is drier, with only 52 mm (2.0 in) of precipitation spread over about 10 days, and a lower humidity level at 89%. For more detailed insights into February conditions, you can check Windsor weather in February.

December and March exhibit notable differences in weather patterns. In December, temperatures 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 is marked by higher precipitation, averaging 82 mm (3.2 in) over 14 days, accompanied by high humidity at 92%. In contrast, March shows a broader temperature range, with a minimum of -5°C (23°F) and a maximum of 22°C (71°F), resulting in a slightly warmer average of 7°C (46°F). Precipitation decreases to 55 mm (2.2 in) over 13 days, and humidity is lower at 86%. For more details on March weather, visit Windsor weather in March.

December and April exhibit significant differences in weather characteristics. In December, temperatures are quite chilly, with a minimum of -4°C (24°F) and an average of 6°C (44°F), all while experiencing higher precipitation levels of 82 mm (3.2 in) over approximately 14 days and a humidity of 92%. In contrast, April brings milder temperatures, ranging from a minimum of -2°C (29°F) to a comfortable average of 10°C (49°F) and reaching a maximum of 26°C (80°F). Additionally, April experiences significantly less rainfall, with only 33 mm (1.3 in) across about 8 days and a lower humidity of 85%. For more detailed insights into April weather, you can check Windsor weather in April.

December and May showcase contrasting weather patterns. In December, temperatures can dip as low as -4°C (24°F), with an average of 6°C (44°F) and a maximum of 14°C (58°F). The month is characterized by high humidity at 92% and substantial rainfall, totaling 82 mm (3.2 in) over about 14 days. In stark contrast, May brings warmer temperatures, with a minimum of 1°C (35°F), an average of 13°C (55°F), and a pleasant maximum reaching 26°C (78°F). Rainfall is lighter in May, with 63 mm (2.5 in) expected over just 10 days and a more comfortable humidity level of 79%. For more details on May weather, check this link: Windsor weather in May.

December and June present starkly contrasting weather conditions. In December, temperatures range from a chilling -4°C (24°F) at their lowest to a mild 14°C (58°F) at their highest, with an average of around 6°C (44°F). The month experiences significant humidity at 92% and receives about 82 mm (3.2 in) of precipitation over approximately 14 days. In contrast, June boasts much warmer temperatures, with minima starting at 7°C (45°F) and soaring to a maximum of 31°C (88°F), averaging 16°C (62°F). The month is slightly drier, with 74 mm (2.9 in) of rainfall occurring over just 9 days and a lower humidity level of 80%. For more details on the delightful June weather, check out Windsor weather in June.

In December, the weather is notably colder, with temperatures ranging from a minimum of -4°C (24°F) to a maximum of 14°C (58°F) and an average of 6°C (44°F). The month often experiences high humidity at 92% and significant precipitation, with 82 mm (3.2 in) of rain spread over 14 days. In contrast, July brings much warmer conditions, with temperatures varying from a minimum of 9°C (48°F) to a scorching maximum of 35°C (96°F) and an average of 18°C (65°F). With lower humidity at 71% and less precipitation totaling 64 mm (2.5 in) over 11 days, July offers a stark contrast to December's chilly and wet climate. For more details about the weather conditions in July, check out Windsor weather in July.

December and August present contrasting weather experiences. In December, temperatures can dip as low as -4°C (24°F) with an average of 6°C (44°F) and can peak at 14°C (58°F), accompanied by high humidity at 92%. This winter month sees about 82 mm (3.2 in) of precipitation spread over 14 days, creating a chilly and damp atmosphere. In stark contrast, August boasts milder temperatures, ranging from a minimum of 8°C (46°F) to an average of 18°C (64°F) and reaching a maximum of 33°C (92°F). With lower humidity at 76% and relatively less precipitation at 67 mm (2.6 in) over 12 days, August is characterized by warmer and drier conditions. For a closer look at August weather, check out Windsor weather in August.

December and September present distinctly different weather patterns. In December, temperatures can dip as low as -4°C (24°F), with an average of 6°C (44°F) and a maximum of 14°C (58°F). The month is characterized by higher precipitation, totaling 82 mm (3.2 in) over approximately 14 days, coupled with a high humidity level of 92%. In contrast, September enjoys milder temperatures, with a minimum of 3°C (38°F), an average of 15°C (59°F), and a peak of 28°C (83°F). The month also sees less rainfall, accumulating 45 mm (1.8 in) over about 10 days and slightly lower humidity at 82%. For more detailed insights, check out Windsor weather in September.

When comparing the weather in December and October, we see notable differences in temperature and precipitation patterns. December experiences colder temperatures, with a minimum of -4°C (24°F) and an average of 6°C (44°F), while October enjoys milder conditions, with a minimum of 1°C (34°F) and an average of 12°C (53°F). Additionally, October typically reaches higher maximum temperatures, peaking at 23°C (73°F), compared to December's maximum of 14°C (58°F). In terms of precipitation, December has a similar amount of rainfall to October, accumulating 82 mm (3.2 in) over 14 days versus October's 86 mm (3.4 in) over 12 days, indicating a slightly wetter December. The humidity also remains high in both months, with December at 92% and October at 90%. For a closer look at October weather, visit Windsor weather in October.

In comparing the weather between November and December, December tends to be slightly colder with lower average temperatures, ranging from a minimum of -4°C (24°F) to a maximum of 14°C (58°F), compared to November’s temperatures which range from -2°C (29°F) to 16°C (62°F). Additionally, December experiences more precipitation, with 82 mm (3.2 in) falling over 14 days, while November has only 53 mm (2.1 in) over 11 days. Despite these differences, both months maintain a high humidity level of 92%. For more details on November weather, check out Windsor weather in November.

Compare Windsor's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Windsor

As December rolls in, Windsor transforms into a charming, yet crisp destination, characterized by a noticeable dip in temperatures and a higher chance of rain compared to the earlier months of autumn. With an average temperature settling around 6°C, the month contrasts sharply with the milder conditions of November. The atmospheric humidity hangs at a high 92%, adding a chill to the air and often leading to those quintessential grey days that require a warming coat. December's increased precipitation, with about 14 rainy days throughout the month, makes it one of the wetter times of the year, perfect for cozy indoor activities or enjoying the festive atmosphere. Embrace the seasonal shift and explore the unique aspects of Windsor's climate this December by visiting Windsor Climate.