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December Weather in Athens, United States

Last updated: June 24, 2025

In December, the average temperature in Athens, United States hovers around 8°C (46°F). While you might experience a chilly minimum of -9°C (15°F), the mercury can rise to a pleasant 23°C (74°F). Be prepared for 137 mm (5.4 in) of precipitation spread over 11 days, contributing to an average humidity level of 88%. Enjoy the diverse climate!

December Temperature in Athens

In December in Athens, the average temperature is 8°C (46°F), with maximums reaching 23°C (74°F) and minimums dipping as low as -9°C (15°F). This varied climate makes it essential to pack layers for your travels to Athens during this month.

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 8°C (46°F), with highs reaching up to 23°C (74°F) and lows dropping to around -9°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec434854607075797874645046
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 total precipitation amount reaches 137 mm (5.4 in) over a span of 11 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 137 mm (5.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec981751621471181081071259512483137
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 88%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration feel much more uncomfortable than the temperature alone would suggest.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
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 Weather6°C (43°F)98 mm (3.9 inches)86%moderate
February Weather9°C (48°F)175 mm (6.9 inches)86%high
March Weather12°C (54°F)162 mm (6.4 inches)86%very high
April Weather16°C (61°F)147 mm (5.8 inches)82%very high
May Weather21°C (70°F)118 mm (4.7 inches)85%extreme
June Weather24°C (76°F)108 mm (4.3 inches)85%extreme
July Weather26°C (80°F)107 mm (4.2 inches)83%extreme
August Weather25°C (78°F)125 mm (4.9 inches)76%very high
September Weather23°C (74°F)95 mm (3.7 inches)76%very high
October Weather18°C (65°F)123 mm (4.9 inches)80%high
November Weather10°C (50°F)83 mm (3.3 inches)88%moderate
December Weather8°C (46°F)137 mm (5.4 inches)88%moderate

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