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January Weather in Altenau, Germany

Last updated: August 23, 2025

In January, the average temperature in Altenau, Germany hovers around 0°C (33°F), with a minimum plunge to -20°C (-3°F) and a maximum reaching 12°C (54°F). Expect 73 mm (2.9 in) of precipitation spread across approximately 13 days, contributing to the region's high average humidity of 91%. Prepare for a chill as you navigate this brisk and wet month!

January Temperature in Altenau

In January in Altenau, the average temperature is 0°C (33°F). The maximum can reach 12°C (54°F), and the minimum can be as low as -20°C (-3°F). Travelers should be prepared for a mix of chilly weather and occasional warmth, making layered clothing essential for comfort.

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

The chart illustrates January temperature patterns in Altenau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altenau, January typically has an average temperature of 0°C (33°F), with highs reaching up to 12°C (54°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec333439465363636456504136
Data source: Temperature data for Altenau 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 Altenau

In Altenau in January, the precipitation amount is 73 mm (2.9 in) over the course of 13 days.

January Precipitation Trends in Altenau

The chart displays monthly precipitation patterns in Altenau, 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 Altenau, January typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec737273457486877860774777
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Altenau

In Altenau in January, humidity is 91%. With an average temperature of 0°C (33°F), this humidity feels like an icy dampness that seeps into your bones, making every step feel heavier and requiring extra layers to stay warm while traveling.

January Average Humidity in Altenau

This chart illustrates the average monthly humidity levels in Altenau, 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 Altenau is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%88%83%75%79%79%79%83%87%90%92%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Altenau

In Altenau in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Altenau.

Maximum UV Index Levels in Altenau for January

The chart shows the monthly maximum UV Index (UVI) for Altenau 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 Altenau typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Altenau 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 Altenau Compares to Other Months

Weather in Altenau varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Altenau, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Altenau, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)73 mm (2.9 inches)91%low
February Weather1°C (34°F)72 mm (2.8 inches)90%low
March Weather4°C (39°F)73 mm (2.9 inches)88%moderate
April Weather8°C (46°F)45 mm (1.8 inches)83%moderate
May Weather12°C (54°F)74 mm (2.9 inches)75%high
June Weather17°C (63°F)86 mm (3.4 inches)79%very high
July Weather17°C (64°F)87 mm (3.4 inches)79%very high
August Weather18°C (64°F)78 mm (3.1 inches)79%high
September Weather14°C (57°F)60 mm (2.4 inches)83%high
October Weather10°C (50°F)77 mm (3.0 inches)87%moderate
November Weather5°C (41°F)47 mm (1.9 inches)90%low
December Weather2°C (36°F)77 mm (3.0 inches)92%low

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