nomadseason

December Weather in Ortho, Belgium

Last updated: August 22, 2025

In December, the average temperature in Ortho, Belgium hovers around 3°C (38°F). Expect conditions to vary, with minimums dipping to -5°C (23°F) and highs reaching up to 13°C (56°F). Rain is also a factor, with an average precipitation of 146 mm (5.7 in) spread over 20 days, contributing to a high average humidity of 93%.

December Temperature in Ortho

In December in Ortho, the average temperature is 3°C (38°F). The maximum can reach 13°C (56°F) and the minimum can be as low as -5°C (23°F). Be prepared for chilly weather and dress in layers if you're planning to explore during this time.

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

The chart illustrates December temperature patterns in Ortho, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ortho, December typically has an average temperature of 3°C (38°F), with highs reaching up to 13°C (56°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec343741475462636357504138
Data source: Temperature data for Ortho 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 Ortho

In Ortho in December, the precipitation amount is 146 mm (5.7 in) spread over a duration of 20 days.

December Precipitation Trends in Ortho

The chart displays monthly precipitation patterns in Ortho, 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 Ortho, December typically receives around 146 mm (5.7 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec97911095089948383789877146
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Ortho

In Ortho in December, humidity is 93%. With an average temperature of 3°C (38°F), this humidity feels like a thick, chilly fog that clings to your skin, making every step outdoors feel heavier and more exhausting, which can be quite uninviting for travelers.

December Average Humidity in Ortho

This chart illustrates the average monthly humidity levels in Ortho, 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 Ortho is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%88%84%81%82%82%80%83%89%91%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Ortho

In Ortho 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 Ortho.

Maximum UV Index Levels in Ortho for December

The chart shows the monthly maximum UV Index (UVI) for Ortho 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 Ortho typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234589886421
Data source: Ortho 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 Ortho Compares to Other Months

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

This table compares monthly weather conditions in Ortho, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)97 mm (3.8 inches)91%low
February Weather3°C (38°F)91 mm (3.6 inches)90%moderate
March Weather5°C (42°F)109 mm (4.3 inches)88%moderate
April Weather9°C (48°F)50 mm (2.0 inches)84%moderate
May Weather12°C (54°F)89 mm (3.5 inches)81%very high
June Weather17°C (62°F)94 mm (3.7 inches)82%very high
July Weather17°C (63°F)83 mm (3.3 inches)82%very high
August Weather17°C (63°F)83 mm (3.3 inches)80%very high
September Weather14°C (57°F)78 mm (3.1 inches)83%high
October Weather10°C (50°F)98 mm (3.8 inches)89%moderate
November Weather5°C (41°F)77 mm (3.0 inches)91%low
December Weather3°C (38°F)146 mm (5.7 inches)93%low

Compare Ortho's Climate with Cities Worldwide