nomadseason

December Weather in Trebnje, Slovenia

Last updated: August 27, 2025

In December, the average temperature in Trebnje, Slovenia hovers around 3°C (37°F). Expect chilly days where temperatures can dip as low as -15°C (5°F) and soar up to 16°C (62°F). With an average humidity of 88% and approximately 100 mm (3.9 in) of precipitation over 9 days, prepare for a damp and brisk atmosphere throughout the month.

December Temperature in Trebnje

In December in Trebnje, the average temperature is 3°C (37°F). Maximum temperatures can reach up to 16°C (62°F), while minimums can drop as low as -15°C (5°F). Be prepared for chilly weather, and pack accordingly if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Trebnje, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trebnje, December typically has an average temperature of 3°C (37°F), with highs reaching up to 16°C (62°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec343944525969717162534437
Data source: Temperature data for Trebnje generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Trebnje

In Trebnje in December, the precipitation amount is 100 mm (3.9 in) spread over 9 days.

December Precipitation Trends in Trebnje

The chart displays monthly precipitation patterns in Trebnje, 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 Trebnje, December typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec44725881145811029414389109100
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Trebnje

In Trebnje in December, humidity is 88%. With an average temperature of 3°C (37°F), this humidity feels like a chilling fog that clings to your skin, making every step outside a damp and brisk challenge for travelers.

December Average Humidity in Trebnje

This chart illustrates the average monthly humidity levels in Trebnje, 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 Trebnje is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%73%73%70%69%63%51%64%83%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Trebnje

In Trebnje in December, 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 Trebnje, you can visit Hourly UV Index in Trebnje.

Maximum UV Index Levels in Trebnje for December

The chart shows the monthly maximum UV Index (UVI) for Trebnje 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 Trebnje typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986532
Data source: Trebnje 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 Trebnje Compares to Other Months

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

This table compares monthly weather conditions in Trebnje, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)44 mm (1.7 inches)88%low
February Weather4°C (39°F)72 mm (2.8 inches)82%moderate
March Weather7°C (44°F)57 mm (2.3 inches)73%moderate
April Weather11°C (52°F)81 mm (3.2 inches)73%high
May Weather15°C (59°F)145 mm (5.7 inches)70%very high
June Weather21°C (69°F)81 mm (3.2 inches)69%very high
July Weather22°C (71°F)102 mm (4.0 inches)63%very high
August Weather22°C (72°F)94 mm (3.7 inches)51%very high
September Weather16°C (62°F)143 mm (5.6 inches)64%high
October Weather12°C (53°F)89 mm (3.5 inches)83%moderate
November Weather7°C (44°F)109 mm (4.3 inches)89%moderate
December Weather3°C (37°F)100 mm (3.9 inches)88%low

Compare Trebnje's Climate with Cities Worldwide