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December Weather in Hartheim, Germany

Last updated: August 23, 2025

In December, the average temperature in Hartheim, Germany hovers around 3°C (38°F). Expect chilly conditions with minimum temperatures dropping to -5°C (23°F) and highs reaching up to 14°C (57°F). Be prepared for some wet days as 136 mm (5.4 in) of precipitation is likely over 18 days, accompanied by high humidity levels at 90%.

December Temperature in Hartheim

In December in Hartheim, the average temperature is 3°C (38°F). The maximum can reach 14°C (57°F) and the minimum can be as low as -5°C (23°F). Be sure to pack warm clothing and prepare for chilly conditions when traveling during this time.

December Weather in Hartheim: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Hartheim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartheim, December typically has an average temperature of 3°C (38°F), with highs reaching up to 14°C (57°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec343943505766696861524238
Data source: Temperature data for Hartheim 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.

December Precipitation in Hartheim

In Hartheim in December, the total precipitation amount is 136 mm (5.4 in) spread over 18 days.

December Precipitation Trends in Hartheim

The chart displays monthly precipitation patterns in Hartheim, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Hartheim, December typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec1058897541141018474578472136
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hartheim

In Hartheim in December humidity is 90%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill wrapping around you, making travel uncomfortable as the cold penetrates your clothing while the heavy moisture lingers in the air.

December Average Humidity in Hartheim

This chart illustrates the average monthly humidity levels in Hartheim, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Hartheim is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%89%87%84%80%82%83%80%83%90%89%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hartheim

In Hartheim in December, 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 Hartheim.

Maximum UV Index Levels in Hartheim for December

The chart shows the monthly maximum UV Index (UVI) for Hartheim in December, 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 December, the maximum UV index in Hartheim typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Hartheim December 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 December Weather in Hartheim Compares to Other Months

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

This table compares monthly weather conditions in Hartheim, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)105 mm (4.1 inches)92%low
February Weather4°C (39°F)88 mm (3.5 inches)89%moderate
March Weather6°C (43°F)96 mm (3.8 inches)87%moderate
April Weather10°C (51°F)54 mm (2.1 inches)84%high
May Weather14°C (57°F)114 mm (4.5 inches)80%very high
June Weather19°C (67°F)101 mm (4.0 inches)82%very high
July Weather20°C (69°F)84 mm (3.3 inches)83%very high
August Weather20°C (68°F)74 mm (2.9 inches)80%very high
September Weather16°C (61°F)57 mm (2.3 inches)83%high
October Weather11°C (52°F)84 mm (3.3 inches)90%moderate
November Weather6°C (42°F)72 mm (2.8 inches)88%low
December Weather3°C (38°F)136 mm (5.4 inches)90%low

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