December Weather in Bletchley, United Kingdom

Last updated: March 17, 2025

In Bletchley, United Kingdom, December brings a chill in the air, with maximum temperatures reaching 14°C (58°F), while averaging around 6°C (43°F). The minimum temperatures dip to a frosty -6°C (22°F), making warm layers a must. This month also witnesses a considerable 81 mm (3.2 in) of precipitation spread across 14 days, contributing to an overall humidity level of 92%. As the holiday season unfolds, residents can expect a mix of wet and cold conditions, perfect for cozy indoor activities.

December Temperature in Bletchley

In Bletchley, United Kingdom, December marks a transition into the chill of winter, with temperatures typically ranging from a minimum of -6°C (22°F) to a moderate maximum of 14°C (58°F). The average temperature hovers around 6°C (43°F), reflecting the overall trend towards cooler weather as the year comes to a close. This month is often characterized by crisp, frosty mornings and a notable drop from the more temperate conditions seen in the autumn months. Despite the cold, December invites a cozy charm, perfect for enjoying indoor festivities or braving the brisk air to experience the festive spirit that envelops the town.

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

The chart illustrates December temperature patterns in Bletchley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec404245485461656358524643
Data source: Temperature data for Bletchley 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 Bletchley

December in Bletchley, United Kingdom, marks a significant increase in precipitation, with 81 mm (3.2 in) of rain falling over 14 days. This surge in rainfall is noteworthy compared to the relatively drier months preceding it, as November received 56 mm (2.2 in) across 12 days. The pattern indicates that as winter sets in, Bletchley experiences a notable shift towards wetter weather, with December boasting higher totals than both October and November. This trend of increased precipitation not only contributes to the overall winter atmosphere but also highlights the region's transition into a wetter season, making December one of the rainiest months of the year.

December Precipitation Trends in Bletchley

The chart displays monthly precipitation patterns in Bletchley, 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.
JanFebMarAprMayJunJulAugSepOctNovDec544959376775677255935681
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bletchley

As December graces Bletchley, the atmosphere is notably damp, with humidity peaking at a substantial 92%. This marks a continuation of the trend seen throughout the colder months, where humidity levels typically remain elevated; November also recorded the same high percentage. In contrast, the summer months of July and August observed significantly lower humidity, dipping to 71% and 76% respectively. The transition from the vibrant spring and summer periods to the chillier autumn and winter clearly influences the moisture in the air, culminating in December's consistently high humidity, which mirrors the overall tendency for increased dampness as the year draws to a close.

December Average Humidity in Bletchley

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

As December rolls into Bletchley, the UV Index dips back to 1, marking a return to low exposure levels akin to the start of the year. This trend reflects the UK's winter months where the sun's intensity wanes, granting residents an extended burn time of 45 minutes before risking skin damage. Following the dynamic peaks of summer, particularly in June and July when levels soared to 8 (very high), December offers a welcome reprieve. With the UV Index firmly in the low category for both December and January, it's a great time to enjoy the outdoors without the looming concern of sunburn. For more details on UV levels throughout the year, visit Bletchley UV Index.

Maximum UV Index Levels in Bletchley for December

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

In Bletchley, United Kingdom, the month of December brings a gentle dimming of daylight, with an average of 106 hours of sunshine. This drop in sunshine follows a vibrant summer peak in July, which boasts an impressive 389 hours, contributing to a clearly defined trend of decreasing daylight as the year winds down. The gradual transition from the long, sun-filled days of spring—culminating in 380 hours in May—to the more subdued December light reflects the changing seasons beautifully. With December's sunshine more limited than the preceding months, it’s a perfect time to appreciate the warmth of indoor gatherings and the cozy charm of winter festivities.

Monthly Sunshine Duration in Bletchley: December Highlighted

The December sunshine duration represents the total number of hours Bletchley 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.
JanFebMarAprMayJunJulAugSepOctNovDec93h147h203h303h380h365h389h351h290h232h138h106h
Data source: Bletchley December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bletchley During December

In Bletchley, the likelihood of sunny weather tends to dip as the year winds down, reaching a low of just 16% in December. This decrease in sunshine is part of a broader trend observed throughout the colder months, as sunny chances gradually decline from a high of 49% in April. While the days of summer—particularly in July—offer a more promising 37% chance of sun, December’s chill ushers in shorter days and a greater likelihood of overcast skies. As autumn gives way to winter, residents can expect December to be one of the cloudier months, marking a stark contrast to the brighter days earlier in the year.

Percentage of Sunny Days in December in Bletchley

The chart illustrates the percentage of sunny days in Bletchley 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 Bletchley experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%25%26%49%30%24%37%22%28%22%31%16%
Data source: Bletchley December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bletchley in December

In Bletchley, United Kingdom, December marks the heart of winter, bringing with it the shortest daylight duration of the year at just 7 hours. As the year progresses from long, sunlit days in June and July—where daylight lingers for an impressive 16 hours—the trend shifts dramatically, highlighting the gradual decline as autumn gives way to winter. Following a slow descent in daylight hours, from 15 hours in May down to 8 hours in November, December's limited sunlight serves as a poignant reminder of the seasonal cycle. As the days grow shorter, the interplay between light and dark not only sets the stage for the festive season but also encourages a deeper appreciation for the return of longer days that will follow in the new year.

Average Daylight Hours in Bletchley for December

The chart illustrates the variation in daylight duration in Bletchley throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 20m9h 56m11h 54m13h 56m15h 41m16h 37m16h 7m14h 32m12h 35m10h 35m8h 47m7h 49m
Data source: Bletchley daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Bletchley

As December settles over Bletchley, the winds, often brisk, provide a fitting finale to the year's weather patterns. With an average wind speed of 4.7 m/s (10 mph), December mirrors October's gusty embrace, suggesting a return to a more lively breeze as winter approaches. This slight uptick is notable considering the calmer months of summer, where wind speeds dipped below 3.5 m/s. While January and February typically follow suit with similarly moderate winds, December stands out as a transitional month, heralding the arrival of colder days ahead. The year wraps up with whispers of wind that not only invigorate the landscape but also echo the dynamic shifts that characterize the climate of Bletchley throughout the seasons.

Average December Wind Speed in Bletchley

The chart displays monthly wind speed patterns in Bletchley, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.35.04.63.54.23.33.23.93.54.74.14.7 m/s
Data source: Bletchley December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Bletchley Compares to Other Months

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

December and January exhibit similar overall temperatures, with January experiencing slightly milder conditions, showcasing an average of 5°C (40°F) compared to December's 6°C (43°F). Both months have a maximum temperature reaching 14°C (58°F), but January offers a bit of a respite from December's wetness, receiving only 54 mm (2.1 in) of precipitation over 10 days, in contrast to December's 81 mm (3.2 in) across 14 days. Humidity levels remain comparable, with December at 92% and January slightly lower at 91%. For a detailed look at January's weather, you can refer to Bletchley weather in January.

December and February weather shows some intriguing similarities and differences. Both months experience a minimum temperature of -6°C (22°F) and an average temperature of 6°C (43°F). However, February tends to be slightly warmer, reaching a maximum of 18°C (65°F) compared to December's high of 14°C (58°F). Precipitation levels also vary, with December receiving more rain at 81 mm (3.2 in) over 14 days, while February has a lighter average of 49 mm (1.9 in) spread over 11 days. Humidity is marginally lower in February at 89%, down from December's 92%. For a more detailed look at the February weather in Bletchley, visit Bletchley weather in February.

In December, the weather tends to be quite cool, with average temperatures ranging from a low of -6°C (22°F) to a high of 14°C (58°F). This month typically sees around 81 mm (3.2 in) of precipitation over 14 days, coupled with high humidity levels at 92%. In contrast, March brings a gradual warming trend, with average temperatures slightly increasing to a minimum of -6°C (21°F) and peaking at 22°C (71°F). Precipitation decreases to 59 mm (2.3 in) over 13 days, and humidity lowers to 86%. For a detailed look at the weather during March, check out Bletchley weather in March.

In December, temperatures can be quite chilly, ranging from a minimum of -6°C (22°F) to a maximum of 14°C (58°F), with an average around 6°C (43°F). The month experiences significant precipitation, totaling 81 mm (3.2 in) over 14 days, alongside high humidity levels at 92%. In contrast, April brings a milder climate, with temperatures varying from -3°C (28°F) to a warm 26°C (80°F), and an average of 9°C (49°F). Precipitation is notably lower at 37 mm (1.4 in) spread across just 8 days, and humidity decreases slightly to 85%. For more detailed information, you can check out Bletchley weather in April.

December and May present markedly different weather conditions. In December, temperatures range from a chilly -6°C (22°F) to a mild 14°C (58°F), with an average of 6°C (43°F). The month is characterized by high humidity at 92% and significant precipitation totaling 81 mm (3.2 in) over 14 days. Conversely, May sees much warmer temperatures, with a minimum of 0°C (33°F) and a maximum of 27°C (80°F), averaging 12°C (55°F). This month experiences lower precipitation levels at 67 mm (2.6 in) over just 11 days and reduced humidity at 79%. For more details on May weather, check out Bletchley weather in May.

December and June showcase stark contrasts in weather patterns. In December, temperatures typically range from a chilly -6°C (22°F) at their lowest to a mild 14°C (58°F) at their peak, with an average of 6°C (43°F). The month is characterized by significant humidity at 92% and frequent precipitation, averaging 81 mm (3.2 in) over 14 days. Conversely, June experiences a much warmer climate, with temperatures varying from a low of 6°C (43°F) to a high of 31°C (89°F), and an average of 16°C (61°F). Additionally, June sees slightly lower precipitation levels at 75 mm (3.0 in) over 11 days, accompanied by a reduced humidity of 80%. For more detailed insights about the weather in June, you can check Bletchley weather in June.

December and July present striking contrasts in weather. In December, temperatures range from a chilly -6°C (22°F) to a mild 14°C (58°F), with an average of 6°C (43°F). This month sees significant precipitation, totaling 81 mm (3.2 in) over about 14 days, accompanied by high humidity levels of 92%. In stark contrast, July offers much warmer conditions, with temperatures ranging from a minimum of 7°C (45°F) to a scorching 37°C (98°F) and an average of 18°C (65°F). Although July has less precipitation, at 67 mm (2.6 in) over 13 days, the humidity is notably lower at 71%. For a more detailed look at July weather, visit Bletchley weather in July.

In December, temperatures can dip as low as -6°C (22°F), with an average of 6°C (43°F) and a maximum of 14°C (58°F). The month is characterized by high humidity at 92% and receives about 81 mm (3.2 in) of precipitation across roughly 14 days. In contrast, August boasts much warmer weather, with temperatures ranging from a minimum of 8°C (46°F) to a comfortable average of 17°C (63°F) and soaring to a maximum of 34°C (94°F). Additionally, August sees lower humidity at 76% and slightly less precipitation at 72 mm (2.8 in) over 13 days. For more details on the weather during this month, you can visit Bletchley weather in August.

December and September present quite contrasting weather patterns. In December, temperatures range from a chilly minimum of -6°C (22°F) to a maximum of 14°C (58°F), with an average of 6°C (43°F). The month sees considerable precipitation, totaling 81 mm (3.2 in) over about 14 days, accompanied by high humidity levels of 92%. In stark contrast, September enjoys milder weather, with temperatures varying from a minimum of 3°C (37°F) to a warm maximum of 29°C (85°F) and an average of 15°C (59°F). It also experiences less rain, at 55 mm (2.2 in) over 10 days, and slightly lower humidity at 82%. For more detailed information on September weather, you can check Bletchley weather in September.

When comparing the weather in December and October, we can see notable differences in temperature and conditions. December experiences lower temperatures, with a minimum of -6°C (22°F) and an average of 6°C (43°F), while October has milder temperatures, ranging from a minimum of 0°C (33°F) to an average of 11°C (53°F). Precipitation levels are fairly similar, with October receiving 92 mm (3.6 in) over 13 days and December slightly lower at 81 mm (3.2 in) across 14 days. Additionally, December tends to be more humid, with levels reaching 92% compared to October’s 90%. For more detailed insights, check out the Bletchley weather in October.

December weather sees a notable drop in temperatures compared to November, with minimums dipping to -6°C (22°F) and maximums reaching only 14°C (58°F), while November enjoyed milder temperatures with a minimum of -2°C (28°F) and a maximum of 17°C (62°F). Precipitation also increases in December, totaling 81 mm (3.2 in) over 14 days, compared to November's 56 mm (2.2 in) across 12 days. Despite both months sharing the same humidity level of 92%, the chill and increased rainfall in December mark a significant transition into winter. For a closer look at November's conditions, check out Bletchley weather in November.

Compare Bletchley's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Bletchley

As December settles in Bletchley, the weather takes a notable turn, contrasting sharply with the milder months preceding it. The chill in the air is palpable, with temperatures dipping to a minimum of -6°C, while the average hovers around a crisp 6°C. With high humidity levels at 92% and precipitation occurring on nearly half the days, December becomes one of the wettest months of the year. This combination creates a distinctly damp and cold atmosphere, making it essential for residents and visitors alike to bundle up and prepare for the unpredictable weather. For a deeper understanding of how December's conditions fit within the broader climate context, explore Bletchley Climate.