January Weather in Trun, Switzerland

Last updated: August 27, 2025

In January, the average temperature in Trun, Switzerland hovers around -8°C (18°F). Expect chilly extremes, with minimums dipping to -25°C (-12°F) and highs reaching up to 7°C (44°F). During this month, precipitation totals 122 mm (4.8 in) spread over 12 days, coupled with a high average humidity of 92%. Stay warm and prepared for a variety of winter weather!

January Temperature in Trun

In January in Trun, the average temperature is -8°C (18°F), with maximums reaching 7°C (44°F) and minimums dropping as low as -25°C (-12°F). Be sure to pack warm clothing and prepare for cold weather if you plan to visit during this time.

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

The chart illustrates January temperature patterns in Trun, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trun, January typically has an average temperature of -8°C (18°F), with highs reaching up to 7°C (44°F) and lows dropping to around -25°C (-12°F).

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

January Precipitation in Trun

In Trun in January, the precipitation amount is 122 mm (4.8 in) over a span of 12 days.

January Precipitation Trends in Trun

The chart displays monthly precipitation patterns in Trun, 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 Trun, January typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 12 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 Trun

In Trun in January humidity is 92%. With an average temperature of -8°C (18°F), this humidity feels like a bone-chilling embrace that makes every breath feel heavy, creating a stark contrast between the icy air and the dampness that clings to your skin, making travel uncomfortable and invigorating all at once.

January Average Humidity in Trun

This chart illustrates the average monthly humidity levels in Trun, 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 Trun is approximately 92%, 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 Trun

In Trun in January, 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 Trun, you can visit Hourly UV Index in Trun.

Maximum UV Index Levels in Trun for January

The chart shows the monthly maximum UV Index (UVI) for Trun 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 Trun typically reaches 2, which falls under the low exposure category.

Data source: Trun 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 Trun Compares to Other Months

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

This table compares monthly weather conditions in Trun, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	122 mm (4.8 inches)	92%	low
February Weather	-5°C (24°F)	83 mm (3.3 inches)	89%	moderate
March Weather	-2°C (28°F)	118 mm (4.6 inches)	87%	high
April Weather	1°C (34°F)	100 mm (3.9 inches)	84%	very high
May Weather	5°C (42°F)	153 mm (6.0 inches)	80%	very high
June Weather	11°C (52°F)	179 mm (7.1 inches)	82%	very high
July Weather	12°C (54°F)	199 mm (7.8 inches)	83%	very high
August Weather	12°C (54°F)	261 mm (10.3 inches)	80%	very high
September Weather	8°C (47°F)	161 mm (6.4 inches)	83%	high
October Weather	4°C (40°F)	166 mm (6.5 inches)	90%	moderate
November Weather	-2°C (28°F)	114 mm (4.5 inches)	88%	moderate
December Weather	-6°C (21°F)	162 mm (6.4 inches)	90%	low