Last updated: February 24, 2025
Experience the enchanting December weather in Lisbon, Portugal, where temperatures typically range from a comfortable 6°C (43°F) at night to a mild maximum of 18°C (65°F) during the day. The average temperature hovers around 13°C (56°F), making it an inviting time for exploration. However, prepare for some rain; the city receives an average of 62 mm (2.4 in) of precipitation over 8 days of the month. With humidity levels peaking at 85%, the atmosphere feels crisp yet cozy, perfect for enjoying Lisbon's vibrant culture amid the lush landscapes.
In December, Lisbon greets visitors with a mild winter climate, where temperatures range from a minimum of 6°C (43°F) to a maximum of 18°C (65°F). The average temperature of 13°C (56°F) is a gentle reminder of the city's temperate maritime climate, standing in contrast to the colder winter months found in many northern cities. As the year draws to a close, the warmth of the autumn months starts to fade, making room for a cozy yet inviting atmosphere. While December is one of the cooler months, it maintains a pleasant charm that encourages exploration of the city's stunning architecture and vibrant culture, highlighted by the festive spirit of the holiday season.
As December arrives in Lisbon, the city experiences a notable increase in precipitation, marking a transition into the wetter winter months. With an average of 62 mm (2.4 in) of rainfall over approximately 8 days, December is significantly wetter than the drier summer months, which see little to no rain. This month’s precipitation is preceded by a gradual increase throughout the fall; November, for instance, witnesses the year's highest rainfall of 80 mm (3.2 in) over 11 days. As the year closes, Lisbon’s landscape is refreshed, with December's rainfall contributing to the lush greenery that characterizes the city, highlighting the vibrant interplay between seasonal shifts and the Mediterranean climate.
In Lisbon, Portugal, December marks the return of higher humidity levels, reaching 85%, which mirrors the conditions of January. This late-autumn spike follows a gradual decline in humidity through the summer months, where it dips to a refreshing 60% in both July and August. As autumn progresses, humidity levels begin to rise again, peaking in November before settling into December. Overall, the pattern reveals a notable seasonal shift, with summer's drier air giving way to the moisture-laden atmosphere of winter, emphasizing Lisbon's maritime climate and its characteristic dampness during these cooler months.
As December settles in Lisbon, the UV Index drops to a moderate 3, allowing residents and visitors to enjoy the city's winter charm with a more relaxed attitude towards sun exposure. This slight decrease continues the trend of declining UV levels as the year comes to a close, following a peak in the summer months characterized by values reaching as high as 11 in June. With a burn time of 30 minutes, December offers a comfortable window for outdoor activities without the intense sun risks of previous months. This steady moderation in UV levels reflects the seasonal shift and highlights the importance of sun safety throughout the year. For those planning outdoor adventures, it's always wise to stay informed. Check the current Lisbon UV Index for any updates!
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As December arrives in Lisbon, the city basks in 222 hours of sunlight, a fitting farewell to the year. While this marks a decline from the bright days of summer, the amount of sunshine still reflects a pleasant climate compared to other winter destinations. This month emphasizes a gradual tapering of daylight from the lively heights of nearly 423 hours in July and stays consistent with the milder figures of late autumn. Visitors can savor the soft warmth of the sun while exploring the historic streets, making December an inviting time to experience the charm of Lisbon despite the drop from earlier months. As the year comes to a close, the city remains a sunlit haven, beckoning all to relish its unique blend of winter allure and warmth.
When considering the likelihood of sunny weather in December in Lisbon, Portugal, it’s intriguing to note that the chance of sun drops to 40%, a notable decline compared to the sunnier months of summer, which enjoy probabilities as high as 73% in July. In the colder months, December ranks similarly to January, where the sun appears about 46% of the time. However, it still outshines the cloudier winter months like February, which plummets to 23%. This trend suggests that while December isn't the sunniest month in Lisbon, it still offers a respectable chance for sunshine amidst the cooler, more overcast days of winter.
As winter settles in, December in Lisbon experiences a slight dip in daylight, offering just 9 hours of sunlight. This marks the culmination of a gradual decline that begins in late summer, where the city basks in an ample 14 hours of daylight during the height of June and July. The trend showcases an intriguing seasonal rhythm; as the days grow shorter from August through December, the sun’s presence fades to its lowest point. However, just beyond the winter solstice, hope glimmers on the horizon as daylight will begin its slow but steady return, promising longer days ahead for the vibrant city of Lisbon.
As December settles into Lisbon, the city experiences a gentle sigh of the wind, with an average speed of 4.9 m/s (11 mph), mirroring the tranquil conditions of January. Notably, the winter months maintain a consistent breeze, particularly as winds peak during the summer at 5.7 m/s (13 mph) in July, before gradually tapering off towards the year’s end. The data reveals a clear seasonal trend: while the early months of the year feature relatively calm winds, spring and summer welcome more robust gusts, providing a lively contrast as the year transitions back into the quieter rhythms of autumn and winter. This predictable yet dynamic interplay between seasonal wind patterns encapsulates the essence of Lisbon's maritime climate, inviting visitors to embrace both the serene and spirited aspects of this enchanting city throughout the year.
The weather in Lisbon 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 Lisbon and find detailed weather information for every month.
In December, the weather in Lisbon includes a mild temperature range with a minimum of 6°C (43°F) and an average of 13°C (56°F), peaking at 18°C (65°F). With 62 mm (2.4 in) of precipitation over 8 days, it tends to be wetter compared to January, which sees a slight drop in minimum temperature to 3°C (38°F) and an average of 12°C (53°F). January's maximum temperature is similar at 19°C (66°F), but it boasts only 37 mm (1.5 in) of rainfall spread over 5 days, maintaining the same humidity level of 85%. For a detailed look at the weather conditions in January, check out Lisbon weather in January.
In December, Lisbon experiences mild temperatures with a minimum of 6°C (43°F) and a maximum of 18°C (65°F), accompanied by an average temperature of 13°C (56°F). The month sees about 62 mm (2.4 in) of precipitation over 8 days, coupled with a high humidity of 85%. In contrast, February has slightly cooler nights, with a minimum of 5°C (41°F), but the maximum temperature can reach 21°C (70°F), maintaining the same average of 13°C (55°F). Precipitation decreases to 53 mm (2.1 in) over 7 days, and humidity drops to 75%. For more detailed information, you can check the Lisbon weather in February.
In December, Lisbon experiences a mild climate, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 18°C (65°F). The month is characterized by higher humidity levels at 85% and receives approximately 62 mm (2.4 in) of precipitation over about 8 days. By contrast, March sees slightly warmer temperatures, with a minimum of 7°C (45°F) and a maximum of 23°C (73°F). Although precipitation remains comparable at 66 mm (2.6 in) across the same number of rainy days, the humidity drops to a more comfortable 72%. This transition into spring brings a more pleasant atmosphere, making March a favorable time to visit. For more details, check out Lisbon weather in March.
In December, the weather is cooler, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 18°C (65°F), and relatively high humidity at 85%. The month sees about 62 mm (2.4 in) of precipitation, spread over approximately 8 days. In contrast, April experiences milder temperatures, with a minimum of 8°C (46°F), an average of 15°C (59°F), and a maximum of 24°C (75°F). Although April has slightly higher precipitation at 73 mm (2.9 in) over about 12 days, the humidity drops to a more comfortable 70%. For more detailed insights on the weather, visit Lisbon weather in April.
December and May in Lisbon present contrasting weather patterns that reflect the changing seasons. In December, temperatures range from a relatively mild minimum of 6°C (43°F) to a maximum of 18°C (65°F), with an average of 13°C (56°F). The month experiences about 62 mm (2.4 in) of precipitation over 8 days, coupled with high humidity at 85%. In contrast, May brings warmer conditions, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 30°C (86°F) and an average of 17°C (63°F). Precipitation is lighter in May, totaling 36 mm (1.4 in) over just 4 days, and the humidity drops to a more comfortable 70%. For a detailed look at Lisbon's weather in May, you can check out Lisbon weather in May.
In December, Lisbon experiences cooler temperatures, with a minimum of 6°C (43°F) and an average of 13°C (56°F), while the maximum can reach up to 18°C (65°F). The month sees relatively high humidity at 85% and experiences 62 mm (2.4 in) of precipitation over about 8 days. In contrast, June brings much warmer weather, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 32°C (90°F), and an average of 18°C (66°F). The humidity drops to 63%, and rainfall is minimal, with only 11 mm (0.4 in) over just 3 days. For more details on the June weather in Lisbon, check out Lisbon weather in June.
In December, the weather in Lisbon is considerably cooler and wetter, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 18°C (65°F), and an average of 13°C (56°F). The month sees about 62 mm (2.4 in) of precipitation over approximately 8 days, creating a humid environment with an average humidity level of 85%. In stark contrast, July boasts a much warmer climate, with temperatures ranging from a low of 15°C (59°F) to a high of 31°C (87°F), averaging around 20°C (68°F). The summer month is remarkably dry, experiencing only 5 mm (0.2 in) of precipitation over no rainy days and a lower humidity of 60%. For a more detailed look at the weather in this summertime month, check out Lisbon weather in July.
The contrast between December and August weather is quite striking in Lisbon. December experiences cooler temperatures, with a minimum of 6°C (43°F) and an average of 13°C (56°F), while August boasts much warmer conditions, with a minimum of 16°C (61°F) and an average of 20°C (69°F). Additionally, August is significantly drier, having only 3 mm (0.1 in) of precipitation over zero rainy days, compared to December's 62 mm (2.4 in) over eight days of rain. Humidity levels also differ, with December being more humid at 85%, while August sits at a comfortable 60%. For a closer look at the specifics of summer weather, check out Lisbon weather in August.
December and September present contrasting weather conditions. In December, temperatures range from a minimum of 6°C (43°F) to a maximum of 18°C (65°F), with an average of 13°C (56°F). The month is characterized by higher humidity at 85% and more frequent rainfall, with 62 mm (2.4 in) of precipitation across about 8 days. In contrast, September offers warmer temperatures, with a minimum of 14°C (58°F) and a maximum of 29°C (84°F), averaging around 20°C (68°F). This month is much drier, only seeing 27 mm (1.1 in) of rain over just 2 days and lower humidity at 67%. For more detailed information, check out Lisbon weather in September.
In comparing the weather of December and October, December presents a cooler experience with average temperatures ranging from a low of 6°C (43°F) to a high of 18°C (65°F), whereas October enjoys warmer temperatures averaging between 10°C (50°F) and 28°C (82°F). Additionally, December sees higher precipitation levels with about 62 mm (2.4 in) over 8 days, compared to October's 46 mm (1.8 in) over just 5 days. The humidity also rises in December, averaging 85%, compared to October's more comfortable 74%. For a closer look at Lisbon's October weather, check out Lisbon weather in October.
When comparing the weather in December to November, we see a notable drop in temperatures. December has a minimum of 6°C (43°F) and an average of 13°C (56°F), while November starts at a milder minimum of 9°C (48°F) with a higher average of 15°C (59°F). The maximum temperature in December reaches 18°C (65°F), which is significantly lower than November's peak of 23°C (73°F). Precipitation also plays a role; December has 62 mm (2.4 in) over 8 days, compared to November's 80 mm (3.2 in) over 11 days. Humidity levels remain relatively close, with December at 85% and November at 83%. For a more detailed look at November's weather, check out Lisbon weather in November.
As December unfolds in Lisbon, the city experiences a delightful shift in weather, marking a transition from the warmer months. With average temperatures around 13°C (56°F), the days are cooler but still pleasantly mild compared to more frigid climates. Although precipitation increases slightly, bringing with it an average of 62 mm (2.4 in) over about 8 days, this month's humidity levels reach a notable 85%, giving the air a fresh, crisp quality. This unique blend of mild temperatures and occasional rainfall creates a distinct, cozy atmosphere, making December a charming time to explore the city's rich culture and vibrant streets. For more insights on seasonal variations, check out Lisbon Climate.