December Weather in Calais, France

Last updated: February 26, 2025

December in Calais, France brings a whimsical winter atmosphere, with temperatures typically ranging from a brisk 0°C (33°F) to a mild 14°C (57°F), averaging around 8°C (47°F). Visitors should prepare for a wet month, as Calais experiences around 133 mm (5.2 in) of precipitation over 19 days, contributing to a striking humidity level of 92%. This combination of cool temperatures and abundant moisture creates a perfect backdrop for enjoying cozy indoor activities or exploring the charming streets draped in winter charm.

December Temperature in Calais

In Calais, France, December welcomes the onset of winter with a gentle chill, marked by minimum temperatures dropping to 0°C (33°F). The month boasts an average temperature of 8°C (47°F), providing a crisp but manageable climate for locals and visitors alike. As the year draws to a close, highs reach about 14°C (57°F), reflecting a slight decline from the milder autumn months. This transition indicates a steady cooling trend, with temperatures gradually decreasing as the winter solstice approaches. December's climate is perfect for bundling up and enjoying the festive atmosphere, whether you're strolling through Christmas markets or warming up with a cup of mulled wine.

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

The chart illustrates December temperature patterns in Calais, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434446495460646562575046
Data source: Temperature data for Calais 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 Calais

In December, Calais experiences a notable increase in precipitation, with 133 mm (5.2 in) of rain falling over 19 days. This marks it as the wettest month of the year, significantly surpassing the autumn months of October and November, which also showcase high rainfall but with fewer days. The trend of growing precipitation as the year concludes suggests a shift towards a more turbulent winter climate, making Calais particularly lush yet challenging to navigate during this season. As the landscape transforms under the weight of frequent showers, December encapsulates the essence of winter in northern France, bringing a distinct character to the region as it wraps up the year.

December Precipitation Trends in Calais

The chart displays monthly precipitation patterns in Calais, 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.
JanFebMarAprMayJunJulAugSepOctNovDec75676328606248746511890133
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Calais

As December arrives in Calais, France, residents experience a notable resurgence in humidity, with levels rising to 92%, mirroring the dampness of November. This indicates a shift toward the colder months, where humidity remains high, creating a chilly and often overcast atmosphere. The year begins with exceptionally high humidity levels, peaking at 91% in January, but gradually trends downward until August, when it dips to 73%—the driest month of the year. However, come fall, the humidity creeps back up, suggesting a persistent maritime influence that characterizes the region's climate. This uptick in December reflects the return of moisture-laden air, setting the stage for a cozy winter in this charming coastal town.

December Average Humidity in Calais

This chart illustrates the average monthly humidity levels in Calais, 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%82%81%76%73%80%89%92%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Calais

In December, Calais, France experiences a low UV Index of 1, indicating minimal risk from sun exposure. Residents and visitors can enjoy the outdoor winter activities with an ample burn time of 45 minutes before requiring sun protection. This trend reflects a consistent pattern throughout the colder months, where UV levels remain relatively low, peaking only during the summer. As the year progresses from January's mild UV Index of 1 to the summer's very high levels of 8, it's evident that the coastal climate influences sun exposure significantly. Thus, while December offers a reprieve from intense UV rays, keeping an eye on local conditions remains essential for safe sun exposure. For further details, check out Calais UV Index.

Maximum UV Index Levels in Calais for December

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

In Calais, France, December brings a subtle yet impactful transition, averaging 162 hours of sunshine. While this marks a decline from the bright days of summer—peaking in July with 420 hours—the December sun still offers fleeting moments of warmth amid colder temperatures. Interestingly, this month's sunshine hours are comparable to November's 208 hours, illustrating a gradual fading of daylight as the year draws to a close. As winter settles in, the steady decrease from the spring highs of 284 hours in March further highlights Calais's seasonal rhythm, reminding us that even in the depths of winter, the sun still plays a vital role in the coastal landscape.

Monthly Sunshine Duration in Calais: December Highlighted

The December sunshine duration represents the total number of hours Calais 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.
JanFebMarAprMayJunJulAugSepOctNovDec128h193h284h352h413h414h420h397h326h250h208h162h
Data source: Calais December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Calais During December

In Calais, France, the likelihood of sunny weather in December sees a notable decline, with only an 18% chance of clear skies. This figure is part of a broader trend where the chances of sunshine generally increase from the frigid depths of winter, peaking in April at 52%, before tapering off again as the year draws to a close. While November offers a slight respite with a 24% chance, December’s gloomy forecast makes it one of the least sunny months. As the year transitions from winter to spring, residents are left hoping for the sun to break through the typical gray clouds, but December certainly leans more towards overcast days.

Percentage of Sunny Days in December in Calais

The chart illustrates the percentage of sunny days in Calais 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 Calais experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%28%40%52%39%34%42%39%40%30%24%18%
Data source: Calais December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Calais in December

As the year progresses in Calais, France, daylight hours paint a vivid picture of the changing seasons. In December, daylight dwindles to just 7 hours, marking the year's shortest days. This decrease follows a gradual decline from the summer months, where June shines with 16 hours of sunlight. As autumn sets in, daylight begins to taper off, first to 12 hours in September and further to 8 hours by November. Each month heralds a rhythmic shift, with the daylight reaching its annual peak in May at 15 hours, before the descent into the winter months. This cyclical pattern beautifully illustrates the interplay of light and darkness, inviting both reflection and adaptation as the days grow shorter.

Average Daylight Hours in Calais for December

The chart illustrates the variation in daylight duration in Calais throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 29m10h 1m11h 55m13h 51m15h 33m16h 25m15h 57m14h 26m12h 34m10h 38m8h 55m7h 59m
Data source: Calais daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Calais

December in Calais, France, brings a notable shift in the wind, with an average speed of 7.3 m/s (16 mph), making it one of the windiest months of the year. As winter sets in, the month showcases a steady increase in gusts compared to late autumn; November's winds measured 6.3 m/s (14 mph). This trend of rising wind speeds can be observed from the preceding months as well, with October also registering significant winds at 7.2 m/s (16 mph). While summer months like June and July offer a gentler breeze averaging around 4.4 m/s (10 mph) and 5.3 m/s (12 mph) respectively, the winter winds underscore the transition into a colder climate. The crisp December air, punctuated by brisk winds, not only enhances the charm of the coastal town but also serves as a reminder of nature's changing rhythms as the year draws to a close.

Average December Wind Speed in Calais

The chart displays monthly wind speed patterns in Calais, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.97.26.66.06.34.45.36.45.27.26.37.3 m/s
Data source: Calais December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Calais Compares to Other Months

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

In December, the weather tends to be milder with an average temperature of 8°C (47°F), peaking at 14°C (57°F), while January sees a slight drop, with average temperatures around 6°C (44°F) and a minimum of -2°C (28°F). Precipitation is higher in December, with 133 mm (5.2 in) spread over 19 days compared to January's 75 mm (2.9 in) over just 12 days. Humidity levels are quite similar, hovering around 92% in December and 91% in January, creating a damp and chilly atmosphere as winter deepens. For more detailed insights on January weather, you can check Calais weather in January.

December and February exhibit some notable differences in weather patterns. In December, temperatures range from a minimum of 0°C (33°F) to a maximum of 14°C (57°F), with an average of 8°C (47°F). The month experiences significant precipitation, totaling 133 mm (5.2 in) across 19 days, and holds a high humidity level of 92%. In contrast, February tends to be colder, with temperatures dropping to a minimum of -3°C (26°F) while maintaining the same maximum of 14°C (57°F) and a slightly lower average of 7°C (44°F). Precipitation is also reduced to 67 mm (2.6 in) over 12 days, and humidity remains relatively high at 89%. For a closer look at February's weather specifics, you can visit Calais weather in February.

In December, Calais experiences a relatively mild winter with average temperatures ranging from a chilly 0°C (33°F) at night to a comfortable 14°C (57°F) during the day. The month is quite wet, receiving around 133 mm (5.2 in) of precipitation over 19 days, and the humidity is notably high at 92%. In contrast, March ushers in the early signs of spring with cooler minimum temperatures of -4°C (26°F) but warmer daytime averages reaching up to 19°C (66°F). Precipitation decreases significantly to 63 mm (2.5 in) over 14 days, and humidity levels drop to 86%. For more detailed insights on the weather during this month, you can visit Calais weather in March.

In December, the weather is notably colder, with temperatures typically ranging from a minimum of 0°C (33°F) to a maximum of 14°C (57°F) and an average of 8°C (47°F). This month also sees significant precipitation, averaging 133 mm (5.2 in) over 19 days, contributing to a high humidity level of 92%. In contrast, April offers a milder climate, with temperatures starting at a minimum of 3°C (37°F) and reaching up to 18°C (66°F), averaging at 9°C (49°F). The precipitation drastically decreases to just 28 mm (1.1 in) spread over 7 days, and humidity also lowers slightly to 85%. For more detailed insights into the weather during this spring month, visit Calais weather in April.

December and May present markedly different weather conditions. In December, temperatures range from a chilly minimum of 0°C (33°F) to a maximum of 14°C (57°F), with an average temperature of 8°C (47°F). This month also experiences considerable precipitation, totaling 133 mm (5.2 inches) over approximately 19 days, coupled with high humidity levels of 92%, making it feel quite damp and cold. In contrast, May offers a more temperate climate, with minimum temperatures around 6°C (43°F) and maximums reaching 23°C (74°F), averaging 12°C (54°F). The month sees significantly less rainfall, with only 60 mm (2.4 inches) over 9 days, and a lower humidity level of 82%, contributing to a more pleasant and mild atmosphere. For a closer look at climate specifics, check out Calais weather in May.

December and June present strikingly contrasting weather patterns. In December, temperatures range from a chilly minimum of 0°C (33°F) to a maximum of 14°C (57°F), with an average of 8°C (47°F) and high humidity at 92%. The month experiences substantial precipitation, with about 133 mm (5.2 in) falling over 19 days. In contrast, June enjoys a milder climate with temperatures ranging from a minimum of 11°C (51°F) to a comfortable maximum of 26°C (79°F) and an average of 16°C (60°F). Precipitation decreases significantly to 62 mm (2.4 in) over just 9 days, accompanied by a lower humidity level of 81%. For a closer look at June weather specifics, you can explore Calais weather in June.

December and July present a stark contrast in weather conditions. In December, temperatures range from a chilly 0°C (33°F) at night to a mild 14°C (57°F) during the day, with an average around 8°C (47°F). This month sees significant precipitation, totaling 133 mm (5.2 in) over approximately 19 days, accompanied by high humidity levels of 92%. In comparison, July offers much warmer temperatures, starting at a minimum of 13°C (56°F) and peaking at 32°C (89°F), with an average of 18°C (64°F). The summer month experiences much less rain, with only 48 mm (1.9 in) falling over just 9 days, and humidity levels are considerably lower at 76%. For more information on July weather specifics, visit Calais weather in July.

When comparing the weather between December and August, there is a stark contrast in temperatures and precipitation. December experiences much cooler conditions, with minimum temperatures dropping to 0°C (33°F) and maximums reaching only 14°C (57°F), accompanied by high humidity at 92%. This month also sees significant rainfall, with 133 mm (5.2 in) spread over 19 days. In contrast, August boasts milder temperatures, with a minimum of 13°C (55°F), an average of 18°C (65°F), and maximums soaring to 28°C (82°F). Precipitation in August is notably lower at 74 mm (2.9 in) over just 12 days and a more comfortable humidity level of 73%. For more details, you can check out Calais weather in August.

In comparing the weather of December and September, we find notable differences in temperature and precipitation. December experiences much cooler temperatures, with a minimum of 0°C (33°F) and an average of 8°C (47°F), while September boasts a milder climate, with minimum temperatures around 11°C (51°F) and an average of 17°C (62°F). Precipitation levels also vary significantly; December sees 133 mm (5.2 in) of rain over 19 days, compared to September's more moderate 65 mm (2.6 in) over just 11 days. Additionally, humidity levels are higher in December at 92%, compared to September's 80%. For more detailed information about September weather, you can visit Calais weather in September.

In comparing the weather between December and October, December tends to be significantly colder, with average temperatures ranging from a minimum of 0°C (33°F) to a maximum of 14°C (57°F), while October enjoys milder temperatures, with a range from 7°C (44°F) to 22°C (72°F). Additionally, December experiences more precipitation, totaling 133 mm (5.2 in) over 19 days, compared to October's 118 mm (4.6 in) over 17 days. Humidity levels are also higher in December at 92%, compared to October's 89%. For a closer look at October weather specifics, you can visit Calais weather in October.

In comparing the weather of December to November, December tends to be cooler, with average temperatures dropping from November's 10°C (50°F) to 8°C (47°F). Additionally, the minimum temperatures in December can reach as low as 0°C (33°F), while November usually doesn't go below 3°C (37°F). December also experiences significantly more precipitation, with 133 mm (5.2 in) over 19 days compared to November's 90 mm (3.6 in) across 17 days. Despite both months having a high humidity level of 92%, December presents a chillier and wetter climate overall. For more detailed information on November weather, check out Calais weather in November.

Compare Calais's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Calais

As December unfolds in Calais, the weather takes on a distinct character compared to other months of the year. With average temperatures hovering around a chilly 8°C, the bite of winter begins to set in, often dipping to a frosty 0°C at night. The month is notably marked by its increased precipitation, with about 19 days of rainfall contributing to a soggy total of 133 mm, bathing the city in a damp atmosphere. Humidity levels peak at a hefty 92%, making for a cold and clammy experience for residents and visitors alike. Whether you’re braving the elements or seeking cozy indoor activities, December in Calais presents a photographic opportunity of the city draped in the magic of winter. For more detailed insights, check out Calais Climate.