January Weather in Olmen, Belgium

Last updated: August 22, 2025

In January, the average temperature in Olmen, Belgium hovers around 4°C (39°F), making it a cool time of year. Expect temperatures to range from a chilly -6°C (21°F) at night to a mild 14°C (58°F) during the day. With 65 mm (2.6 in) of precipitation spread over 11 days, it's a good idea to pack an umbrella! Moreover, the average humidity is a high 91%, so be prepared for a rather damp atmosphere.

January Temperature in Olmen

In January in Olmen, the average temperature is 4°C (39°F). The maximum can reach 14°C (58°F), while the minimum can drop to as low as -6°C (21°F). Be prepared for a mix of chilly weather and occasional mild days while planning your travels.

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

The chart illustrates January temperature patterns in Olmen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Olmen, January typically has an average temperature of 4°C (39°F), with highs reaching up to 14°C (58°F) and lows dropping to around -6°C (21°F).

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

January Precipitation in Olmen

In Olmen in January, the precipitation amount is 65 mm (2.6 in) over a span of 11 days.

January Precipitation Trends in Olmen

The chart displays monthly precipitation patterns in Olmen, 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 Olmen, January typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Olmen

In Olmen in January, humidity is 91%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and forcing travelers to bundle up tightly against the cold, sticky air.

January Average Humidity in Olmen

This chart illustrates the average monthly humidity levels in Olmen, 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 Olmen 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 Olmen

In Olmen 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 Olmen.

Maximum UV Index Levels in Olmen for January

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

Data source: Olmen 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 Olmen Compares to Other Months

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

This table compares monthly weather conditions in Olmen, 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 (39°F)	65 mm (2.6 inches)	91%	low
February Weather	5°C (42°F)	74 mm (2.9 inches)	90%	low
March Weather	7°C (45°F)	74 mm (2.9 inches)	87%	moderate
April Weather	10°C (51°F)	37 mm (1.5 inches)	84%	moderate
May Weather	14°C (57°F)	68 mm (2.7 inches)	77%	high
June Weather	19°C (66°F)	73 mm (2.9 inches)	74%	very high
July Weather	19°C (67°F)	81 mm (3.2 inches)	72%	very high
August Weather	19°C (67°F)	79 mm (3.1 inches)	71%	high
September Weather	15°C (60°F)	60 mm (2.4 inches)	81%	moderate
October Weather	12°C (54°F)	89 mm (3.5 inches)	88%	moderate
November Weather	7°C (45°F)	56 mm (2.2 inches)	91%	low
December Weather	5°C (42°F)	94 mm (3.7 inches)	92%	low