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December Weather in Athens, United States

Last updated: June 24, 2025

In Athens, United States, the average temperature in December hovers around 2°C (36°F). During this month, temperatures can swing from a chilly -20°C (-3°F) to a mild 20°C (69°F). Expect 52 mm (2.0 in) of precipitation over about 7 days, alongside high humidity levels at 87%. Stay prepared for a mix of conditions!

December Temperature in Athens

In December in Athens, the average temperature is 2°C (36°F). The maximum can reach 20°C (69°F), while the minimum can drop as low as -20°C (-3°F). This climate offers a unique experience for travelers, highlighting the beauty of both warm and chilly days.

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 (36°F), with highs reaching up to 20°C (69°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec283143526575777471574236
Data source: Temperature data for Athens generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Athens

In Athens in December, the precipitation amount is 52 mm (2.0 in) over a duration of 7 days.

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 52 mm (2.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec676713212714613011786661086752
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Athens

In Athens in December, humidity is 87%. With an average temperature of 2°C (36°F), this humidity feels like an unwelcome chill that seeps into your bones, making outdoor exploration feel damp and heavy, and encouraging travelers to seek the warmth of indoor attractions instead.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Athens

In Athens in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Athens, you can check the information here.

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 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111198643
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.

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.

This table compares monthly weather conditions in Athens, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)67 mm (2.6 inches)84%moderate
February Weather0°C (32°F)67 mm (2.6 inches)82%moderate
March Weather6°C (44°F)132 mm (5.2 inches)84%high
April Weather11°C (53°F)127 mm (5.0 inches)83%very high
May Weather18°C (66°F)146 mm (5.7 inches)80%very high
June Weather24°C (75°F)130 mm (5.1 inches)83%extreme
July Weather25°C (78°F)117 mm (4.6 inches)82%extreme
August Weather24°C (75°F)86 mm (3.4 inches)82%very high
September Weather22°C (71°F)66 mm (2.6 inches)79%very high
October Weather14°C (57°F)108 mm (4.3 inches)79%high
November Weather5°C (42°F)67 mm (2.6 inches)88%moderate
December Weather2°C (36°F)52 mm (2.0 inches)87%moderate

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