Last updated: February 24, 2025
Coimbra in December offers a mild yet variable climate, where temperatures range from a pleasant maximum of 19°C (67°F) to a chilly minimum of -2°C (28°F). With an average temperature of 11°C (52°F), visitors can expect a mix of cool days and crisp evenings. This month sees approximately 112 mm (4.4 in) of rainfall spread over 12 days, contributing to a high humidity level of 87%. Be prepared for occasional showers while enjoying the enchanting atmosphere of this historic city.
As December settles over Coimbra, Portugal, the temperatures reflect the transition into winter, with a noticeable drop compared to the milder autumn months. The minimum temperature dips to -2°C (28°F), hinting at a chill that blankets the historic streets, while the average temperature hovers around 11°C (52°F), ensuring that the days are cool but still relatively mild for the season. The maximum temperature reaches a comfortable 19°C (67°F), allowing for pleasant afternoons that invite locals and visitors alike to enjoy the charming ambiance of the city. This month showcases a distinct shift, as the region prepares for the colder months ahead, yet still offers a balanced climate that keeps Coimbra alive with activity during the festive season.
December in Coimbra, Portugal, marks a robust end to the year with an average precipitation of 112 mm (4.4 in), reflecting the region's trend of increasing rainfall as winter approaches. This month typically sees about 12 days of rain, contributing to the overall wetter pattern observed since autumn. Notably, the precipitation is slightly lower than November's significant 126 mm (5.0 in) but remains considerable, suggesting a consistent dampness that characterizes the season. The rainfall during December is part of a larger cycle where the wettest months—November and March—prompt a steady rhythm of precipitation, making Coimbra’s climate both lush and vibrant in the heart of winter.
In December, Coimbra, Portugal experiences a return to higher humidity levels, registering at 87%, mirroring January's conditions. This uptick follows a month of fluctuating humidity, where November hovers at 86%. As the year progresses, we observe a notable trend: after peaking in winter months, humidity tends to decline through the summer, hitting a low of 63% in July before gradually rising again towards the year's end. Thus, December not only marks a seasonal shift but also signals the start of the humid winter, providing a contrast to the drier, warmer summer months. The cyclical nature of Coimbra’s humidity showcases the region's rich climate variations throughout the year.
As the year wraps up in Coimbra, Portugal, December presents a noticeable shift in UV exposure, characterized by a lower UV Index of 2, placing it in the low exposure category with a burn time of 45 minutes. This decline follows a summer peak, where the UV Index soared to an extreme high of 11 in June. Throughout the year, Coimbra experiences a progressive increase in UV levels from moderate in January to extreme in mid-summer, before tapering off in the fall and finally reaching its lowest point in December. This trend highlights a cycle of sun intensity that guides locals and visitors alike in planning their outdoor activities safely. For more detailed insights, check out Coimbra UV Index.
UV Risk Categories
In Coimbra, Portugal, December offers a gentle farewell to the year, with an average of 192 hours of sunshine. While this is one of the dimmer months, it still showcases the city's inviting charm, contrasting starkly with the vibrant sunshine of summer, which peaks in July at an impressive 425 hours. As we transition from the lush brightness of late spring and summer months—where sunshine exceeds 400 hours—the gradual decline towards winter is palpable. Interestingly, despite the shorter days, December's sunlight plays a crucial role in keeping the spirit alive, inviting visitors to explore the historical richness and scenic beauty of Coimbra even in the fading light of the year.
In December, Coimbra, Portugal, experiences a 38% chance of sunny weather, reflecting a noticeable dip as the year draws to a close. This trend aligns with the drop in sunshine probability typically observed during the winter months, contrasting sharply with the peak sunshine levels seen in the summer, particularly in August at 67%. While visitors can still anticipate some sunny days in December, they should prepare for more variable weather, as this month sits among the lower percentages, just above February's 20%. Overall, December offers a mix of brisk winter days with occasional spells of sunshine, making it a unique time to enjoy Coimbra's charm.
As December arrives in Coimbra, Portugal, the daylight hours dwindle to a modest 9 hours, mirroring the shorter days of January and November. This seasonal trend reveals a subtle yet noticeable ebb in sunlight as the year draws to a close, with daylight gradually increasing from the depths of winter into the vibrant brightness of spring. From March onwards, Coimbra witnesses a delightful ascent of daylight, peaking at 14 hours in May and June, before tapering off again through the latter half of the year. This rhythmic pattern not only marks the changing seasons but also invites residents and visitors to embrace the cozy charm of winter, all while eagerly anticipating the longer days that will soon follow.
In December, Coimbra, Portugal experiences a notable uptick in wind speed, averaging 3.6 m/s (8 mph), which stands out as one of the year's breezier months. This increase contrasts with the gentle breezes of autumn, particularly November and October, where wind speeds hovered around 2.6 to 2.7 m/s (6 mph). As the year wraps up, the winds pick up slightly, nudging closer to the early winter months of January and February, which feature consistent breezes at 3.3 m/s and 3.7 m/s respectively. Overall, December's winds signal a shift that complements the cooler temperatures, adding a refreshing chill to the air as Coimbra embraces the festive spirit of the season.
The weather in Coimbra 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 Coimbra and find detailed weather information for every month.
December typically experiences slightly warmer temperatures than January, with averages around 11°C (52°F) compared to January's 9°C (48°F). While both months maintain high humidity levels of 87%, December sees more precipitation, totaling 112 mm (4.4 in) over 12 days, whereas January has only 63 mm (2.5 in) over 7 days. As a result, January tends to feel drier and slightly cooler, making it a more comfortable month for outdoor activities. For more detailed information about January weather, you can check Coimbra weather in January.
In December, the weather tends to be cooler, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 19°C (67°F) and an average of 11°C (52°F). This month experiences more precipitation, totaling 112 mm (4.4 in) over 12 rainy days, accompanied by higher humidity at 87%. In contrast, February brings slightly milder temperatures, with a minimum of -1°C (31°F) and a maximum of 23°C (73°F), maintaining the same average of 11°C (53°F). Precipitation decreases to 88 mm (3.5 in) across just 9 days, and humidity drops to a more comfortable 81%. For more detailed insights, you can check out Coimbra weather in February.
December weather is characterized by cooler temperatures, with a minimum of -2°C (28°F) and an average of 11°C (52°F), while the maximum reaches up to 19°C (67°F). It experiences relatively high precipitation, totaling 112 mm (4.4 in) over 12 days and high humidity at 87%. In contrast, March brings a slight warming trend, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 27°C (81°F) and an average of 12°C (55°F). Although March has a comparable level of precipitation at 117 mm (4.6 in) over 11 days, the humidity decreases to 78%, creating a fresher atmosphere. For more details about the weather in March, check out Coimbra weather in March.
December weather is characterized by cooler temperatures, with average highs reaching 19°C (67°F) and lows dropping to a chilly -2°C (28°F). The month typically experiences significant precipitation, totaling 112 mm (4.4 inches) over about 12 days, accompanied by high humidity levels averaging 87%. In contrast, April offers a more temperate climate, with average temperatures ranging from a minimum of 4°C (39°F) to a maximum of 28°C (84°F). While slightly more precipitation is recorded at 120 mm (4.7 inches) over 13 days, the humidity is lower at 79%, contributing to a fresher feel. For a detailed look at April weather patterns, you can visit Coimbra weather in April.
December and May showcase strikingly different weather patterns. In December, temperatures range from a chilly minimum of -2°C (28°F) to a maximum of 19°C (67°F), with an average of 11°C (52°F). This month brings considerable precipitation, averaging 112 mm (4.4 in) over 12 days, accompanied by high humidity levels at 87%. In contrast, May experiences milder conditions, with minimum temperatures around 5°C (41°F) and maximums reaching 33°C (92°F), showcasing an average of 17°C (63°F). The precipitation is notably lower at 56 mm (2.2 in) over just 8 days, and humidity decreases to 78%. For a closer look at the pleasant weather that May brings, check out Coimbra weather in May.
December and June present a stark contrast in weather patterns. In December, temperatures range from a chilly minimum of -2°C (28°F) to a mild maximum of 19°C (67°F), with an average temperature of 11°C (52°F). The month is characterized by high humidity at 87% and considerable precipitation, averaging 112 mm (4.4 in) over 12 days. In contrast, June boasts significantly warmer temperatures, with minimums around 8°C (46°F) and maximums soaring up to 36°C (98°F), averaging 19°C (66°F). It enjoys lower humidity at 71% and much less rainfall, recording only 31 mm (1.2 in) over 8 days. For more insights, check out Coimbra weather in June.
When comparing the weather in December and July, there are notable contrasts in temperature and precipitation levels. December features much cooler temperatures, with a minimum of -2°C (28°F) and an average of 11°C (52°F), while July boasts a significantly warmer minimum of 11°C (52°F) and an average high of 21°C (70°F), peaking at a scorching 37°C (100°F). Furthermore, December experiences higher precipitation, with 112 mm (4.4 in) spread over 12 days, compared to July's scant 8 mm (0.3 in) over just 2 days. The humidity also differs, with December having a higher level at 87%, while July enjoys a more comfortable 63%. For more detailed insights into the warm summer weather, check out Coimbra weather in July.
When comparing the weather in December and August, notable differences emerge in both temperature and precipitation. December experiences cooler temperatures, with a range from a chilly -2°C (28°F) to a milder 19°C (67°F), accompanied by relatively high humidity at 87% and significant rainfall of 112 mm over 12 days. In contrast, August boasts much warmer conditions, with temperatures ranging from a comfortable 11°C (52°F) to a sweltering 39°C (103°F), along with low humidity at 64% and minimal precipitation of just 9 mm over only one day. For more detailed insights, you can check Coimbra weather in August.
In comparing the weather between December and September, December brings cooler temperatures with a minimum of -2°C (28°F) and an average of 11°C (52°F), peaking at 19°C (67°F). It also experiences higher precipitation, with around 112 mm (4.4 in) over about 12 days, and a humidity level of 87%. In contrast, September boasts much warmer conditions with a minimum of 9°C (49°F) and an average temperature reaching 20°C (69°F), soaring to a maximum of 37°C (98°F). This month sees significantly less rainfall, totaling just 36 mm (1.4 in) over about 4 days, along with a lower humidity of 71%. For more details, you can check Coimbra weather in September.
In comparing December and October weather, December tends to be cooler, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 19°C (67°F) and an average of 11°C (52°F). In contrast, October enjoys milder temperatures, with a minimum of 5°C (41°F), an average of 17°C (63°F), and highs that can reach up to 35°C (96°F). Additionally, December experiences more precipitation, averaging 112 mm (4.4 in) over 12 days, while October sees slightly less with 91 mm (3.6 in) over 8 days, indicating a drier month overall. The humidity is also higher in December at 87%, compared to October's 79%. For more detailed insights, you can check Coimbra weather in October.
In comparing the weather between December and November, December tends to be cooler, with maximum temperatures averaging around 19°C (67°F) compared to November's warmer average of 25°C (77°F). While December sees a lower minimum temperature of -2°C (28°F), November maintains a milder minimum at 2°C (36°F). Precipitation levels are slightly lower in December, at 112 mm (4.4 in) over 12 days, compared to November’s 126 mm (5.0 in) over 13 days. Humidity remains relatively high in both months, at 87% in December and 86% in November. For a detailed look at November conditions, visit Coimbra weather in November.
In December, Coimbra experiences a notable shift from the mildness of previous months, with cooler temperatures and increased humidity defining the landscape. As the year draws to a close, the city encounters more precipitation, averaging around 112 mm across approximately 12 days, which contributes to a cozy, yet damp atmosphere. While daytime highs can reach a comfortable 19°C, nighttime temperatures can dip significantly, reminding visitors of the season's chill. This transition invites a different charm to Coimbra, setting the stage for holiday festivities amidst its historic streets. For a deeper dive into the climatic patterns, visit Coimbra Climate.