December Weather in Athens, United States

Last updated: June 24, 2025

In Athens, United States, the average temperature in December is a brisk 9°C (49°F). Visitors can expect a minimum of -5°C (23°F) and a maximum of 24°C (76°F), offering a wide range of weather experiences. Prepare for 132 mm (5.2 in) of precipitation over about 10 days, with the air carrying an average humidity of 89%.

December Temperature in Athens

In December in Athens, the average temperature is 9°C (49°F). Maximums can reach 24°C (76°F), while minimums can dip as low as -5°C (23°F). This variation makes it essential for travelers to pack layers to comfortably adapt to the changing weather.

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 9°C (49°F), with highs reaching up to 24°C (76°F) and lows dropping to around -5°C (23°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 132 mm (5.2 in) over a span 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 132 mm (5.2 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Athens

In Athens in December, humidity is 89%. With an average temperature of 9°C (49°F), this humidity feels like a persistent dampness that clings to your clothes and skin, making it challenging to stay comfortable while traveling.

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 89%, 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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Athens for better planning.

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 4, 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	8°C (46°F)	106 mm (4.2 inches)	86%	moderate
February Weather	11°C (51°F)	140 mm (5.5 inches)	84%	high
March Weather	13°C (56°F)	116 mm (4.6 inches)	83%	very high
April Weather	17°C (63°F)	122 mm (4.8 inches)	81%	very high
May Weather	22°C (71°F)	126 mm (5.0 inches)	81%	extreme
June Weather	25°C (77°F)	113 mm (4.5 inches)	81%	extreme
July Weather	26°C (80°F)	115 mm (4.5 inches)	83%	extreme
August Weather	26°C (79°F)	132 mm (5.2 inches)	81%	very high
September Weather	24°C (75°F)	120 mm (4.7 inches)	82%	very high
October Weather	19°C (66°F)	134 mm (5.3 inches)	78%	very high
November Weather	11°C (53°F)	80 mm (3.1 inches)	86%	high
December Weather	9°C (49°F)	132 mm (5.2 inches)	89%	moderate