December Weather in Sint-Niklaas, Belgium

Last updated: August 22, 2025

In Sint-Niklaas, Belgium, the average temperature in December hovers around 6°C (43°F). Visitors should prepare for a range of temperatures, with a minimum of -4°C (25°F) and a maximum of 15°C (58°F). Expect 91 mm (3.6 in) of precipitation over 17 days, contributing to a notably high average humidity of 92%.

December Temperature in Sint-Niklaas

In December in Sint-Niklaas, the average temperature is 6°C (43°F), with maximums reaching 15°C (58°F) and minimums dropping as low as -4°C (25°F). Travelers should be prepared for chilly weather and varying conditions, so layering clothing is advisable.

December Weather in Sint-Niklaas: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sint-Niklaas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sint-Niklaas, December typically has an average temperature of 6°C (43°F), with highs reaching up to 15°C (58°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec404245505765666660554643
Data source: Temperature data for Sint-Niklaas 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 Sint-Niklaas

In Sint-Niklaas in December, the precipitation amount is 91 mm (3.6 in) over the course of 17 days.

December Precipitation Trends in Sint-Niklaas

The chart displays monthly precipitation patterns in Sint-Niklaas, 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 Sint-Niklaas, December typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec636669396470747556835491
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sint-Niklaas

In Sint-Niklaas in December humidity is 92%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps through your clothes, making outdoor activities uncomfortable and requiring extra layers for warmth while navigating the slick streets.

December Average Humidity in Sint-Niklaas

This chart illustrates the average monthly humidity levels in Sint-Niklaas, 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 Sint-Niklaas is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%85%82%82%80%76%82%89%92%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sint-Niklaas

In Sint-Niklaas 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 Sint-Niklaas.

Maximum UV Index Levels in Sint-Niklaas for December

The chart shows the monthly maximum UV Index (UVI) for Sint-Niklaas 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 Sint-Niklaas typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Sint-Niklaas 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 Sint-Niklaas Compares to Other Months

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

This table compares monthly weather conditions in Sint-Niklaas, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)63 mm (2.5 inches)91%low
February Weather6°C (42°F)66 mm (2.6 inches)89%low
March Weather7°C (46°F)69 mm (2.7 inches)87%moderate
April Weather10°C (51°F)39 mm (1.5 inches)85%moderate
May Weather14°C (57°F)64 mm (2.5 inches)82%high
June Weather18°C (65°F)70 mm (2.8 inches)82%very high
July Weather19°C (66°F)74 mm (2.9 inches)80%very high
August Weather19°C (66°F)75 mm (3.0 inches)76%high
September Weather16°C (60°F)56 mm (2.2 inches)82%moderate
October Weather13°C (55°F)83 mm (3.3 inches)89%moderate
November Weather8°C (46°F)54 mm (2.1 inches)92%low
December Weather6°C (43°F)91 mm (3.6 inches)92%low

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