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January Weather in Athens, United States

Last updated: June 24, 2025

In Athens, United States, the average temperature in January hovers around 1°C (34°F), with extremes ranging from a chilling -20°C (-3°F) to a pleasant 22°C (72°F). Be prepared for some damp days, as 89 mm (3.5 in) of precipitation typically falls over about 9 days of the month. The air can feel quite humid, with an average humidity level of 88%.

January Temperature in Athens

In January in Athens, the average temperature is 1°C (34°F). Maximums can reach 22°C (72°F), while minimums can drop as low as -20°C (-3°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for varying weather conditions.

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 22°C (72°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec343845546572777570594439
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.

January Precipitation in Athens

In Athens in January, the precipitation amount is 89 mm (3.5 in) during a span of 9 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 89 mm (3.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec8912511614014214811112410310783116
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Athens

In Athens in January humidity is 88%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel feel damp and brisk, where every breath carries a crisp bite, and the air clings to your skin, urging you to seek warmth and comfort.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%87%82%84%82%73%74%81%89%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098653
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.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)89 mm (3.5 inches)88%moderate
February Weather3°C (38°F)125 mm (4.9 inches)88%moderate
March Weather7°C (45°F)116 mm (4.5 inches)88%high
April Weather12°C (54°F)140 mm (5.5 inches)86%very high
May Weather18°C (65°F)142 mm (5.6 inches)82%very high
June Weather22°C (72°F)148 mm (5.8 inches)84%very high
July Weather25°C (77°F)111 mm (4.4 inches)82%very high
August Weather24°C (75°F)124 mm (4.9 inches)73%very high
September Weather21°C (70°F)103 mm (4.0 inches)73%very high
October Weather15°C (60°F)107 mm (4.2 inches)81%high
November Weather7°C (44°F)83 mm (3.3 inches)89%moderate
December Weather4°C (39°F)116 mm (4.6 inches)86%moderate

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