January Weather in Athens, United States

Last updated: June 24, 2025

In January in Athens, United States, the average temperature hovers around 1°C (34°F). Be prepared for a wide range of temperatures, as they can dip as low as -21°C (-5°F) and rise up to 20°C (69°F). Expect significant precipitation with about 82 mm (3.2 in) over 11 days of rainfall, combined with an average humidity of 87%.

January Temperature in Athens

In January in Athens, the average temperature is 1°C (34°F), with maximums reaching 20°C (69°F) and minimums dipping as low as -21°C (-5°F). This range suggests a dramatic contrast in weather, so travelers should prepare for both chilly and relatively warm conditions during their visit.

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 1°C (34°F), with highs reaching up to 20°C (69°F) and lows dropping to around -21°C (-5°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 precipitation amount is 82 mm (3.2 in) over the course of 11 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 82 mm (3.2 inches) of precipitation spread over approximately 11 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 87%. With an average temperature of 1°C (34°F), this humidity feels like a chilling blanket enveloping you, making every step outside feel heavy and damp, and leaving you longing for warmth and comfort while traveling.

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 87%, 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	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