December Weather in Athens, United States

Last updated: June 24, 2025

In December, the average temperature in Athens, United States hovers around 4°C (39°F). Expect chilly conditions with minimums plunging to -16°C (4°F), while the mercury can reach a maximum of 19°C (67°F). Prepare for 99 mm (3.9 in) of precipitation spread over 10 days, accompanied by a high average humidity of 86%. Stay cozy and enjoy the unique atmosphere of this season!

December Temperature in Athens

In December in Athens, the average temperature is 4°C (39°F). Maximum can reach 19°C (67°F) and minimum can be as low as -16°C (4°F). Be sure to pack layers to stay comfortable while exploring the diverse weather conditions.

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 4°C (39°F), with highs reaching up to 19°C (67°F) and lows dropping to around -16°C (4°F).

Data source: Temperature data for Athens generated using information from the Copernicus Climate Change Service.

December Precipitation in Athens

In Athens in December, the total precipitation amount is 99 mm (3.9 in) spread over a period of 10 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 99 mm (3.9 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Athens

In Athens in December humidity is 86%. With an average temperature of 4°C (39°F), this humidity feels like a chilly mist enveloping you, making it essential to bundle up while exploring, as each breath comes with a damp chill that can be quite refreshing yet starkly invigorating for travelers.

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 86%, offering insight into how humid the weather typically is during this month.

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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	82 mm (3.2 inches)	87%	moderate
February Weather	4°C (40°F)	135 mm (5.3 inches)	87%	high
March Weather	7°C (44°F)	105 mm (4.1 inches)	86%	very high
April Weather	11°C (53°F)	123 mm (4.8 inches)	84%	very high
May Weather	17°C (62°F)	144 mm (5.7 inches)	83%	extreme
June Weather	20°C (68°F)	119 mm (4.7 inches)	83%	extreme
July Weather	22°C (72°F)	90 mm (3.5 inches)	79%	extreme
August Weather	21°C (71°F)	111 mm (4.4 inches)	66%	very high
September Weather	19°C (66°F)	98 mm (3.8 inches)	68%	very high
October Weather	14°C (57°F)	121 mm (4.8 inches)	78%	high
November Weather	6°C (43°F)	71 mm (2.8 inches)	89%	moderate
December Weather	4°C (39°F)	99 mm (3.9 inches)	86%	moderate