January Weather in Athens, United States

Last updated: June 24, 2025

In January, the average temperature in Athens, United States hovers around -2°C (29°F), with a minimum dipping to -22°C (-8°F) and a maximum reaching 18°C (64°F). Expect 67 mm (2.6 in) of precipitation over 7 days, accompanied by an average humidity of 89%. Be prepared for a chilly, damp month!

January Temperature in Athens

In January in Athens, the average temperature is -2°C (29°F). The maximum can reach 18°C (64°F), while the minimum can drop as low as -22°C (-8°F). Be sure to pack warm clothing for your travels, but also prepare for some surprisingly mild days.

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

The chart illustrates January 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, January typically has an average temperature of -2°C (29°F), with highs reaching up to 18°C (64°F) and lows dropping to around -22°C (-8°F).

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

January Precipitation in Athens

In Athens in January, the total precipitation amount is 67 mm (2.6 in) over a span of 7 days.

January Precipitation Trends in Athens

The chart displays monthly precipitation patterns in Athens, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Athens, January typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Athens

In Athens in January humidity is 89%. With an average temperature of -2°C (29°F), this humidity feels like a suffocating fog that clings to your skin, making outdoor adventures less enjoyable and giving travel a heavy and oppressive feel.

January Average Humidity in Athens

This chart illustrates the average monthly humidity levels in Athens, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Athens is approximately 89%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Athens

In Athens in January, 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 January

The chart shows the monthly maximum UV Index (UVI) for Athens in January, 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 January, the maximum UV index in Athens typically reaches 3, which falls under the moderate exposure category.

Data source: Athens January 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 January 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 January’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 January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	67 mm (2.6 inches)	89%	moderate
February Weather	0°C (31°F)	83 mm (3.3 inches)	88%	moderate
March Weather	3°C (37°F)	76 mm (3.0 inches)	86%	high
April Weather	9°C (49°F)	122 mm (4.8 inches)	84%	very high
May Weather	15°C (60°F)	103 mm (4.0 inches)	76%	very high
June Weather	20°C (69°F)	77 mm (3.0 inches)	72%	very high
July Weather	23°C (75°F)	116 mm (4.6 inches)	66%	very high
August Weather	23°C (73°F)	96 mm (3.8 inches)	64%	very high
September Weather	19°C (66°F)	95 mm (3.7 inches)	72%	high
October Weather	13°C (55°F)	131 mm (5.2 inches)	81%	high
November Weather	5°C (41°F)	90 mm (3.6 inches)	87%	moderate
December Weather	1°C (33°F)	91 mm (3.6 inches)	84%	low