December Weather in Athens, Greece

Last updated: August 21, 2025

December in Athens, Greece presents a unique blend of cool temperatures and occasional rain. With a maximum of 21°C (70°F) and an average of 11°C (53°F), the month offers mild conditions perfect for exploring the city's rich history. Visitors can expect a minimum of 1°C (34°F) on cooler nights. Rainfall is common, with 66 mm (2.6 in) spread over 9 days, creating a humid atmosphere at 76%. This season invites both locals and tourists to enjoy the vibrant culture while wrapped in cozy layers, making Athens a charming winter destination.

December Temperature in Athens

In December, Athens experiences a noticeable dip in temperatures as winter approaches, with lows of 1°C (34°F) and averages around 11°C (53°F). Daytime highs can reach up to 21°C (70°F), providing a mild escape from the chill that characterizes much of Europe during this time. Compared to preceding months, December showcases a gradual transition as the city shifts from the warmth of autumn, with temperatures dipping steadily from November’s milder range. The crisp air and cooler evenings make for a refreshing atmosphere, inviting both locals and tourists to enjoy the city's rich history wrapped in a seasonal charm.

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

The chart illustrates December temperature patterns in Athens, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Athens, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec485154606977838376665952
Data source: Temperature data for Athens 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 Athens

In December, Athens experiences a notable uptick in precipitation, with 66 mm (2.6 in) of rain falling over an average of 9 days. This increase marks the wettest month of the year, surpassing even the rainfall seen in January and November. The city's transition into winter becomes evident as rain replaces the dry spells of summer and early autumn, enhancing the atmospheric freshness and providing much-needed hydration to the region. This trend highlights a seasonal shift, where cooler temperatures coincide with more frequent showers, painting a picturesque but sometimes damp portrait of Athens as it wraps up the year.

December Precipitation Trends in Athens

The chart displays monthly precipitation patterns in Athens, 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. In Athens, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec5748394223339417304866
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Athens

In December, Athens experiences a humidity level of 76%, which aligns closely with the higher humidity of the winter months. As the year draws to a close, the city's humidity begins to rise again after dipping to a low of 63% in August. This slight increase reflects a trend seen from November's 75% and signals a gradual return to the moisture-laden atmosphere typical of the cooler season. The humidity levels in December and January, hovering around 76% and 76% respectively, create a damp yet mild climate that adds to the charm of the city during its winter months, contrasting with the drier summer atmosphere.

December Average Humidity in Athens

This chart illustrates the average monthly humidity levels in Athens, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Athens is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%74%75%77%72%68%63%65%72%75%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Athens

As December arrives in Athens, Greece, the UV Index dips back to 3, indicating a moderate exposure level that requires protective measures, particularly for prolonged outdoor activities. This decrease marks a shift from the intense summer months when the UV Index peaked at 10 for several consecutive months. Interestingly, the trend shows a gradual decline from November's UV Index of 4, offering a reprieve from the sun's harsher rays. With a burn time of 30 minutes, residents and visitors alike can enjoy the mild winter sun while keeping in mind the need for sun safety. This pattern underscores the importance of adjusting sun protection strategies throughout the year. For more detailed information on UV levels and to stay informed, visit Athens UV Index.

Maximum UV Index Levels in Athens for December

The chart shows the monthly maximum UV Index (UVI) for Athens 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. In December, the maximum UV index in Athens typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468101010108743
Data source: Athens 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 Athens

In December, Athens experiences a gentle shift towards winter, with about 250 hours of sunlight illuminating the city. This marks a decline from the vibrant November, which boasts 261 hours of sunshine, yet remains significantly brighter than the colder months preceding it. As the year progresses from the abundant summer months—peaking in July with an impressive 423 hours—the sunlight gradually wanes, reflecting the city's transition into the quieter, cozier season. Despite this decrease, December’s sunlight still wraps Athens in a warm glow, inviting locals and visitors alike to embrace the serene beauty of the city's historic streets and landmarks.

Monthly Sunshine Duration in Athens: December Highlighted

The December sunshine duration represents the total number of hours Athens 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.
JanFebMarAprMayJunJulAugSepOctNovDec200h252h328h346h398h409h423h396h346h313h261h250h
Data source: Athens December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Athens During December

In Athens, Greece, December brings a transition to cooler months, with the likelihood of sunny weather dropping to 51%. This is a notable dip from the vibrant summer months when sunshine peaks at 94% in July and 95% in August. As the year winds down, the chance of sun gradually decreases from 77% in September to a less favorable 40% in November. December, however, provides a modest revival with a slightly higher probability of sunshine compared to the preceding month. While visitors may encounter cloudy days, the potential for clear skies and pleasant weather remains a charming aspect of Athens in winter.

Percentage of Sunny Days in December in Athens

The chart illustrates the percentage of sunny days in Athens 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 Athens experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%58%57%55%70%71%94%95%77%57%40%51%
Data source: Athens December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Athens in December

As December arrives in Athens, daylight begins to dwindle to a cozy 9 hours, mirroring the transitional chill of winter. This month represents the low point in the annual cycle, where sunlight recedes significantly after the peak summer months of 14 hours in June, July, and August. Following the gradual decline from the vibrant 14 hours in May to a steady decrease through the fall, December serves as a reminder of the cyclical nature of light and dark. After this short respite, the days will gradually lengthen again, paving the way for the 10 hours of daylight that February will bring, igniting the anticipation of spring's return.

Average Daylight Hours in Athens for December

The chart illustrates the variation in daylight duration in Athens throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 50m10h 46m11h 58m13h 11m14h 14m14h 44m14h 28m13h 33m12h 23m11h 10m10h 6m9h 33m
Data source: Athens daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Athens

As December arrives in Athens, Greece, the winds pick up, bringing an average speed of 3.5 m/s (8 mph), which marks a notable increase compared to the calmer summer months. Throughout the year, wind speeds in Athens tend to fluctuate, with the breeziest moments typically seen during the winter and early spring months. Transitioning from a gentle 2.4 m/s (5 mph) in May, the winds gradually shift back to more spirited gusts, peaking in December. This late-autumn increase not only enhances the city's atmospheric charm but also sets the stage for the cooler temperatures ahead, making December a refreshing time to experience the alluring streets of Athens.

Average December Wind Speed in Athens

The chart displays monthly wind speed patterns in Athens, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.23.02.92.62.41.83.12.73.03.13.03.5 m/s
Data source: Athens December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Athens Compares to Other Months

Weather in Athens varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Athens, focusing on differences in temperature, rainfall, humidity, and UV levels.

December and January in Athens present contrasting weather conditions, despite similar humidity levels of 76%. In December, temperatures range from a minimum of 1°C (34°F) to a maximum of 21°C (70°F), with an average of 11°C (53°F) and a total rainfall of 66 mm (2.6 in) over 9 rainy days. In comparison, January experiences cooler temperatures, with a minimum of -4°C (25°F) and an average of 9°C (48°F), while the maximum only slightly rises to 22°C (72°F). Rainfall decreases to 57 mm (2.2 in) across 7 days. For more detailed information, you can check Athens weather in January.

In comparing the weather between December and February, we see only slight variations. December experiences a minimum temperature of 1°C (34°F) with an average high of 21°C (70°F), while February's temperatures range from 0°C (32°F) to a maximum of 20°C (68°F), indicating that both months remain relatively mild. Precipitation is slightly higher in December, with 66 mm (2.6 in) over approximately 9 days, compared to February's 48 mm (1.9 in) over 8 days. Humidity levels are comparable, at 76% in December and 75% in February, suggesting a similar comfort level in the air. For a detailed perspective on weather conditions during this period, you can check out Athens weather in February.

December and March both feature mild temperatures, but March typically presents slightly warmer conditions overall. In December, the minimum temperature is around 1°C (34°F), with an average of 11°C (53°F) and a maximum of 21°C (70°F), accompanied by 66 mm (2.6 in) of precipitation over approximately 9 days and a humidity level of 76%. In contrast, March has a minimum temperature of 0°C (32°F) and an average of 12°C (54°F), peaking at 23°C (74°F). It experiences less rainfall, totaling 39 mm (1.5 in) across about 5 days, and slightly lower humidity at 74%. For more insights on March weather, you can check Athens weather in March.

December and April showcase notable differences in weather patterns. December has cooler temperatures with a minimum of 1°C (34°F) and an average of 11°C (53°F), reaching a maximum of 21°C (70°F). It also experiences higher precipitation, totaling 66 mm (2.6 in) over 9 days, accompanied by a humidity level of 76%. In contrast, April brings milder weather, with temperatures ranging from a minimum of 4°C (40°F) to an average of 15°C (60°F) and a maximum of 29°C (85°F). This month sees less rain, with only 42 mm (1.6 in) over about 5 days and a slightly lower humidity of 75%. For more insights on what to expect in April, check out Athens weather in April.

In December, the weather tends to be cooler, with average temperatures ranging from a minimum of 1°C (34°F) to a maximum of 21°C (70°F), while the average hovers around 11°C (53°F). The month experiences about 66 mm (2.6 in) of precipitation over approximately 9 days, contributing to a relatively humid atmosphere with humidity levels at 76%. In contrast, May boasts much warmer temperatures, with a minimum of 10°C (51°F) and a peak of 36°C (97°F), averaging around 21°C (70°F). The month is notably drier, receiving only 23 mm (0.9 in) of rain over about 4 days, and the humidity remains slightly elevated at 77%. This makes May a more pleasant time for outdoor activities compared to the cooler and wetter conditions of December. For more detailed weather insights, you can refer to this link: Athens weather in May.

In December, temperatures in Athens range from a chilly 1°C (34°F) to a mild 21°C (70°F), with an average of 11°C (53°F). The month experiences around 66 mm (2.6 in) of precipitation over approximately 9 days, contributing to a relatively high humidity level of 76%. In contrast, June boasts significantly warmer weather, with temperatures ranging from a minimum of 13°C (56°F) to a scorching maximum of 38°C (101°F) and an average of 25°C (77°F). With just 33 mm (1.3 in) of rainfall spread over 5 days, the humidity dips slightly to 71%. For more details, check out Athens weather in June.

December and July present contrasting weather conditions. In December, temperatures range from a chilly minimum of 1°C (34°F) to a mild maximum of 21°C (70°F), with an average temperature of 11°C (53°F). The month experiences a notable amount of precipitation, with around 66 mm (2.6 in) falling over 9 days and humidity hovering at 76%. Conversely, July boasts significantly warmer temperatures, with a minimum of 19°C (67°F) and soaring averages reaching 28°C (83°F), peaking at an impressive 42°C (108°F). This summer month sees much less rain, with only 9 mm (0.4 in) over just 2 days, and humidity is somewhat lower at 68%. For more details on July's weather, you can check this link: Athens weather in July.

December and August present strikingly different weather patterns. In December, temperatures range from a chilly minimum of 1°C (34°F) to a comfortable maximum of 21°C (70°F), with an average temperature of 11°C (53°F). This month sees about 66 mm (2.6 in) of precipitation over nine rainy days, contributing to higher humidity levels at 76%. In contrast, August boasts much warmer conditions, with temperatures soaring from a low of 19°C (66°F) to a scorching high of 43°C (109°F) and an average of 28°C (83°F). Remarkably, August experiences minimal rainfall, with only 4 mm (0.2 in) recorded across zero rainy days and lower humidity at 63%. For a more detailed look at August's warm climate, check out the link: Athens weather in August.

December weather presents a cooler and more variable climate compared to September. While December sees average temperatures ranging from a minimum of 1°C (34°F) to a maximum of 21°C (70°F), September offers much warmer conditions, with temperatures fluctuating between a minimum of 13°C (55°F) and a scorching maximum of 37°C (98°F). Additionally, December experiences significantly more rainfall, with 66 mm (2.6 in) over 9 days, contrasted with September’s lighter precipitation of just 17 mm (0.7 in) over 2 days. The humidity is also higher in December at 76%, compared to September's 65%. For a closer look at what to expect, check out Athens weather in September.

December weather shows a notable drop in temperature compared to October, with average highs of 11°C (53°F) versus October's warmer 19°C (66°F). The minimum temperatures in December can dip to around 1°C (34°F), making it considerably chillier than October's milder lows of 7°C (45°F). Additionally, December sees more precipitation, with about 66 mm (2.6 in) over 9 days, compared to October's relatively light rainfall of 30 mm (1.2 in) spread over just 4 days. The humidity levels are somewhat similar, with December at 76% and October slightly lower at 72%. For a closer look at October's climate, you can check out Athens weather in October.

When comparing the weather in December to that of November, there are some notable differences. December temperatures are generally cooler, with a minimum of 1°C (34°F) and a maximum of 21°C (70°F), compared to November's milder range of 4°C (39°F) to 25°C (78°F). Additionally, December experiences more precipitation, averaging 66 mm (2.6 in) over 9 days, while November sees only 48 mm (1.9 in) with 7 rainy days. The humidity remains relatively consistent, with December at 76% and November slightly lower at 75%. For more details on November weather in Athens, you can check Athens weather in November.

Compare Athens's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Athens

December in Athens ushers in a noticeable shift in weather, characterized by cooler temperatures and increased humidity compared to the milder months that precede it. With an average temperature hovering around 11°C (53°F), days can feel quite brisk, especially in contrast to the warmer autumn months. The city also experiences an uptick in precipitation, with about 9 days of rain, marking this month as one of the wetter periods in the year. The charm of Athens during December, however, lies in its festive atmosphere, where the mild daytime temperatures still allow for enjoyable outings amidst the historical backdrop. For a deeper dive into how December weather interacts with Athens’ overall climate, check out Athens Climate.