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January Weather in Rettenberg, Germany

Last updated: August 23, 2025

In January, the average temperature in Rettenberg, Germany hovers around -3°C (27°F), with extremes ranging from a chilling -27°C (-16°F) to a milder 11°C (53°F). Expect 142 mm (5.6 in) of precipitation spread over approximately 12 days, contributing to a notably high average humidity of 93%. Stay warm and prepared for those rainy days!

January Temperature in Rettenberg

In January in Rettenberg, the average temperature is -3°C (27°F), with maximums reaching 11°C (53°F) and minimums dropping as low as -27°C (-16°F). Travelers should be prepared for chilly weather and pack appropriately to enjoy their time in this wintery destination.

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

The chart illustrates January temperature patterns in Rettenberg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rettenberg, January typically has an average temperature of -3°C (27°F), with highs reaching up to 11°C (53°F) and lows dropping to around -27°C (-16°F).
JanFebMarAprMayJunJulAugSepOctNovDec273135424858595952453629
Data source: Temperature data for Rettenberg 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 Rettenberg

In Rettenberg in January, the total precipitation amount is 142 mm (5.6 in), occurring over the course of 12 days.

January Precipitation Trends in Rettenberg

The chart displays monthly precipitation patterns in Rettenberg, 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 Rettenberg, January typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1421101309820018521121115013386165
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Rettenberg

In Rettenberg in January humidity is 93%. With an average temperature of -3°C (27°F), this humidity feels like a damp chill that seeps through your clothes, making travel uncomfortable and forcing you to bundle up against the biting cold while navigating the wet conditions.

January Average Humidity in Rettenberg

This chart illustrates the average monthly humidity levels in Rettenberg, 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 Rettenberg is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%89%86%83%78%79%82%80%83%90%89%90%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Rettenberg

In Rettenberg in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Rettenberg, you can visit Hourly UV Index in Rettenberg.

Maximum UV Index Levels in Rettenberg for January

The chart shows the monthly maximum UV Index (UVI) for Rettenberg 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 Rettenberg typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789986432
Data source: Rettenberg 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 Rettenberg Compares to Other Months

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

This table compares monthly weather conditions in Rettenberg, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)142 mm (5.6 inches)93%low
February Weather0°C (31°F)110 mm (4.3 inches)89%moderate
March Weather2°C (36°F)130 mm (5.1 inches)86%moderate
April Weather6°C (42°F)98 mm (3.9 inches)83%high
May Weather9°C (49°F)199 mm (7.9 inches)78%very high
June Weather14°C (58°F)185 mm (7.3 inches)79%very high
July Weather15°C (60°F)211 mm (8.3 inches)82%very high
August Weather15°C (60°F)211 mm (8.3 inches)80%very high
September Weather11°C (52°F)150 mm (5.9 inches)83%high
October Weather7°C (45°F)133 mm (5.2 inches)90%moderate
November Weather2°C (36°F)86 mm (3.4 inches)89%moderate
December Weather-2°C (29°F)165 mm (6.5 inches)90%low

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