January Weather in Olen, Belgium

Last updated: August 22, 2025

In January, the average temperature in Olen, Belgium hovers around 4°C (40°F), with a minimum chill of -6°C (21°F) and a cozy maximum of 14°C (58°F). Expect about 65 mm (2.5 in) of precipitation spread over 12 days, contributing to an average humidity of a rather high 91%. Stay prepared for the mix of cool weather and persistent moisture!

January Temperature in Olen

In January in Olen, the average temperature is 4°C (40°F), with maximums reaching up to 14°C (58°F) and minimums dropping as low as -6°C (21°F). It’s advisable to pack warm clothing and prepare for chilly conditions while exploring this destination.

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

The chart illustrates January temperature patterns in Olen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Olen, January typically has an average temperature of 4°C (40°F), with highs reaching up to 14°C (58°F) and lows dropping to around -6°C (21°F).

Data source: Temperature data for Olen generated using information from the Copernicus Climate Change Service.

January Precipitation in Olen

In Olen in January, the precipitation amount is 65 mm (2.5 in) over the course of 12 days.

January Precipitation Trends in Olen

The chart displays monthly precipitation patterns in Olen, 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 Olen, January typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Olen

In Olen in January, humidity is 91%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor travel uncomfortable and necessitating extra layers for warmth.

January Average Humidity in Olen

This chart illustrates the average monthly humidity levels in Olen, 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 Olen is approximately 91%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Olen

In Olen in January, 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 Olen.

Maximum UV Index Levels in Olen for January

The chart shows the monthly maximum UV Index (UVI) for Olen 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 Olen typically reaches 1, which falls under the low exposure category.

Data source: Olen 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 Olen Compares to Other Months

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

This table compares monthly weather conditions in Olen, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	65 mm (2.5 inches)	91%	low
February Weather	5°C (42°F)	72 mm (2.8 inches)	89%	low
March Weather	7°C (45°F)	72 mm (2.8 inches)	87%	moderate
April Weather	10°C (51°F)	38 mm (1.5 inches)	85%	moderate
May Weather	14°C (57°F)	65 mm (2.6 inches)	82%	high
June Weather	19°C (66°F)	66 mm (2.6 inches)	82%	very high
July Weather	19°C (67°F)	77 mm (3.0 inches)	80%	very high
August Weather	19°C (66°F)	78 mm (3.1 inches)	76%	high
September Weather	16°C (60°F)	56 mm (2.2 inches)	82%	moderate
October Weather	12°C (55°F)	84 mm (3.3 inches)	89%	moderate
November Weather	7°C (46°F)	57 mm (2.2 inches)	92%	low
December Weather	6°C (42°F)	93 mm (3.7 inches)	92%	low