Last updated: October 30, 2025
In Luxembourg during December, the weather can be quite the contrast, with maximum temperatures reaching 14°C (58°F) while the average hovers around 4°C (40°F). The chill of winter is evident as minimum temperatures can dip to -6°C (22°F). This month also brings a notable 118 mm (4.6 in) of precipitation, spread across approximately 19 days, contributing to a high humidity level of 93%. Embrace the cozy atmosphere and the seasonal charm of this picturesque city, as it transforms under a blanket of winter weather.
In December, Luxembourg experiences a notable chill as winter firmly sets in. With temperatures typically ranging from a minimum of -6°C (22°F) to a maximum of 14°C (58°F), the average hovers around 4°C (40°F), marking a stark contrast to the mild days of autumn. This month sees a gradual dip in temperatures, indicating a shift towards colder weather patterns that began in November. As the year draws to a close, the crisp air and occasional frost create a picturesque winter landscape, inviting locals and visitors alike to enjoy the festive charm of the city.
December in Luxembourg is characterized by a significant uptick in precipitation, ending the year with 118 mm (4.6 in) of rain, making it the wettest month of the year. This substantial increase from the average monthly totals reflects a striking trend, as December also counts 19 rainy days, the highest number recorded throughout the year. In contrast to the drier months like April and July, December's persistent showers contribute to a chilly, damp atmosphere, typical of late autumn. This surge in rainfall underscores a shift from the milder, more stable conditions of earlier months, emphasizing the transition into winter's embrace in the Grand Duchy.
As December rolls in Luxembourg, residents can expect a notable rise in humidity, peaking at 93%—the highest level of the year. This seasonal shift marks a consistent trend where humidity levels gradually increase during the colder months. After a gradual decline from 91% in November, December's dampness sets the stage for the winter chill, indicating that the weather is markedly more humid as the year comes to a close. This pattern underscores Luxembourg's climatic nature, where humidity tends to elevate as temperatures drop, providing a cozy, albeit moist, atmosphere for those braving the winter season.
In December, Luxembourg experiences a notably low UV Index of 1, indicating minimal sun exposure risk for residents and visitors alike. As the year winds down, this trend reflects a significant drop from the higher indexes seen during the summer months, where values peaked at 9 in June and 8 in both May and July. With a burn time of 45 minutes, individuals can comfortably enjoy outdoor activities without excessive sun protection concerns. This seasonal decline emphasizes the importance of adapting our sun care habits throughout the year, as highlighted in the earlier months where UV levels rose steadily from 2 in January to 8 in May. For detailed insights on UV levels at different times, visit Luxembourg UV Index.
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In December, Luxembourg experiences a modest 109 hours of sunshine, marking a slight drop as the year draws to a close. This month typically follows the brighter glow of summer, where June and July boast the highest sunshine figures at around 406 to 410 hours. As the seasons transition, daylight hours gradually diminish, culminating in the year's shortest days. The trend clearly illustrates a shift from the plentiful sunlight of spring, with March peaking at 251 hours, to the dimmer winter months, leaving residents craving the warmth of longer days ahead. Despite the decrease, December's sunshine offers a touch of winter radiance, creating a unique charm that enhances the festive spirit in this picturesque European locale.
In Luxembourg, the likelihood of enjoying sunny weather in December is notably low, with only a 13% chance of sunshine. This trend marks a significant drop compared to the milder months preceding it, where the probability steadily increases from 11% in January to a more optimistic 44% in March. As the year progresses, the sun shines more frequently in the early spring, peaking in April at 51%. However, as December arrives, gloomy skies tend to dominate, reminiscent of November's 19% chance. So, if you plan to visit Luxembourg in December, it's wise to prepare for a mostly gray month, where bursts of sunlight are a treasured rarity.
In Luxembourg, the December daylight duration mirrors the year's quiet retreat into winter, offering only 8 hours of sunlight. This period marks the close of a gradual decline from the sun-kissed heights of 16 hours in June, where the long summer days invite outdoor adventures. As the seasons shift, daylight ebbs consistently, reflecting the natural rhythm of the year—starting with 10 hours in February, peaking with the vibrant bloom of May, and dwindling as the cold sets in. There's a distinct pattern where each month ushers in more or less light, with December's short days reminding residents to savor the cozy warmth of gatherings as nature rests, eagerly anticipating the return of longer days ahead.
As the year winds down in Luxembourg, December brings a gentle but notable shift in wind speed, averaging 3.4 m/s (8 mph). This slight uptick from the earlier months indicates a welcome boost of briskness as the festive season approaches. Interestingly, after a summer of calmer breezes, particularly in June and September, the winds begin to stir again, echoing the lively spirit of winter celebrations. While January typically holds the title for the windiest month, December's winds remind us of the transition into colder days, gently rattling the branches and filling the air with a crisp chill that beckons for cozy gatherings and holiday cheer.
Weather in Luxembourg varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Luxembourg, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather is generally milder compared to January, with average temperatures ranging from a minimum of -6°C (22°F) to a maximum of 14°C (58°F). December also sees considerable precipitation, averaging 118 mm (4.6 in) over 19 days, coupled with a high humidity level of 93%. In contrast, January experiences colder conditions, with temperatures dropping to a minimum of -9°C (15°F), averaging around 2°C (36°F), and peaking at 13°C (55°F). Rainfall decreases significantly to 70 mm (2.8 in) over 11 days, and humidity remains slightly lower at 91%. For more details on January's weather, you can check Luxembourg weather in January.
December and February in Luxembourg showcase distinct weather patterns, despite having the same average temperature of 4°C (40°F). In December, temperatures range from a low of -6°C (22°F) to a high of 14°C (58°F), accompanied by substantial precipitation of 118 mm (4.6 in) across 19 days, resulting in a humidity level of 93%. In contrast, February experiences slightly colder minimum temperatures of -10°C (15°F) but can reach a warmer maximum of 19°C (66°F). Precipitation decreases to 73 mm (2.9 in) over 12 days, with humidity at a lower 90%. For a detailed overview of the weather in February, check out Luxembourg weather in February.
When comparing the weather in December and March, December tends to be colder overall, with average temperatures hovering around 4°C (40°F) and minimums reaching as low as -6°C (22°F). In contrast, March sees a slight increase in temperatures, averaging 6°C (44°F) and occasionally peaking at 23°C (73°F). December experiences higher precipitation, totaling 118 mm (4.6 in) across 19 days, while March has a more manageable 75 mm (3.0 in) over 14 days. Despite the shift towards milder weather in March, humidity remains relatively high in both months, with December at 93% and March at 88%. For more details on the specifics of March weather, you can visit Luxembourg weather in March.
December and April present markedly different weather conditions. In December, temperatures range from a chilly -6°C (22°F) at their lowest to a mild 14°C (58°F) at their highest, with an average temperature of 4°C (40°F). This month also sees hefty precipitation, totaling 118 mm (4.6 in) over 19 days, and high humidity levels at 93%. In contrast, April boasts a more pleasant climate, with temperatures ranging from -3°C (26°F) to a comfortable 27°C (80°F), averaging around 10°C (50°F). Precipitation drops significantly to 40 mm (1.6 in) over just 9 days, accompanied by a decrease in humidity to 84%. For more details, check out Luxembourg weather in April.
December and May present starkly contrasting weather conditions. In December, temperatures can dip as low as -6°C (22°F), with an average of 4°C (40°F) and highs reaching only 14°C (58°F). The month is characterized by high humidity at 93% and significant precipitation, totaling 118 mm (4.6 in) over 19 days. In contrast, May experiences much milder weather, with minimum temperatures around 0°C (33°F) and averages climbing to 13°C (56°F), peaking at a warm 31°C (88°F). Additionally, May sees less rainfall, totaling 70 mm (2.8 in) over about 12 days, and lower humidity at 81%. For more detailed weather insights, you can check Luxembourg weather in May.
In December, the weather is characterized by chilly temperatures, with a minimum of -6°C (22°F) and an average of 4°C (40°F). Precipitation levels are relatively high at 118 mm (4.6 in), occurring over 19 days, and the humidity is a notable 93%. In contrast, June brings a much warmer climate with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 34°C (94°F), averaging around 18°C (65°F). The precipitation decreases to 70 mm (2.7 in) over only 10 days, and humidity also drops to 82%. For more detailed information, you can check out Luxembourg weather in June.
December and July present stark contrasts in weather conditions. December experiences colder temperatures, with a minimum of -6°C (22°F) and an average of 4°C (40°F), while July boasts significantly warmer temperatures, ranging from a minimum of 8°C (47°F) to a maximum of 38°C (101°F). Precipitation is also more frequent in December, with 118 mm (4.6 in) over 19 days, compared to just 70 mm (2.8 in) over 8 days in July. Additionally, December's high humidity at 93% contrasts with the slightly lower 82% humidity found in July, making the summer month feel more comfortable despite the heat. For more details, you can check Luxembourg weather in July.
December and August present contrasting weather conditions. In December, temperatures range from a chilly -6°C (22°F) at their lowest to a maximum of 14°C (58°F), with an average of 4°C (40°F). This month also sees significant precipitation, with 118 mm (4.6 in) spread over 19 days and high humidity levels at 93%. In stark contrast, August boasts much warmer temperatures, with a minimum of 7°C (44°F), an average of 19°C (67°F), and highs reaching up to 35°C (95°F). Precipitation is less frequent in August, totaling 59 mm (2.3 in) across 12 days and with lower humidity at 80%. For more details on August weather, visit Luxembourg weather in August.
December weather is notably colder and wetter compared to September. In December, temperatures range from a chilly -6°C (22°F) at night to a maximum of 14°C (58°F) during the day, while September enjoys a much milder climate with minimums of 4°C (39°F) and highs reaching up to 32°C (89°F). Additionally, December sees more precipitation, with 118 mm (4.6 in) falling over 19 days, compared to September's 61 mm (2.4 in) over just 9 days. The humidity is also higher in December at 93%, compared to 83% in September. For more details on September weather, visit Luxembourg weather in September.
December's weather is notably colder than October's, with average temperatures hovering around 4°C (40°F) compared to October's more temperate 11°C (52°F). While October experiences a relatively mild range with maximums reaching up to 25°C (77°F), December's highs are capped at 14°C (58°F). Additionally, December sees more precipitation at 118 mm (4.6 in) over 19 days, compared to October's 76 mm (3.0 in) over just 12 days. Humidity levels are slightly higher in December at 93%, while October remains at 89%. For those interested in more details, you can check out Luxembourg weather in October.
In comparing the weather conditions of December and November, December tends to be colder with average temperatures ranging from a minimum of -6°C (22°F) to a maximum of 14°C (58°F), while November has milder temperatures that range from -3°C (26°F) to 20°C (68°F). Additionally, December experiences more precipitation, totaling 118 mm (4.6 in) over 19 days, compared to November’s 70 mm (2.7 in) over just 12 days. Humidity levels are slightly higher in December at 93%, compared to 91% in November, contributing to the overall chill of the month. For a detailed look at November's weather, you can check Luxembourg weather in November.
As December unfolds in Luxembourg, the weather takes on a distinctly chilly character, contrasting sharply with the milder temperatures of the preceding months. Frequent rain and pervasive humidity create a damp atmosphere, making this month one of the wettest of the year. With temperatures often hovering around the colder end of the spectrum, residents and visitors alike need to bundle up, as night-time lows can dip well below freezing. December's shorter daylight hours and lingering frost set the stage for a truly wintry ambiance, perfect for cozying up indoors or enjoying the festive holiday spirit. To learn more about the nuances of Luxembourg's weather throughout the year, visit Luxembourg Climate.