January Weather in Sarnen, Switzerland

Last updated: August 27, 2025

In Sarnen, Switzerland, the average temperature in January hovers around 0°C (32°F). During this time, temperatures can dip as low as -13°C (10°F) but may climb to a maximum of 12°C (54°F). Expect about 138 mm (5.4 in) of precipitation spread over 13 days, contributing to an average humidity level of 92%.

January Temperature in Sarnen

In January in Sarnen, the average temperature is 0°C (32°F). Maximums can reach 12°C (54°F), while minimums can dip as low as -13°C (10°F). Travelers should prepare for chilly conditions and pack warm clothing when visiting during this time.

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

The chart illustrates January temperature patterns in Sarnen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sarnen, January typically has an average temperature of 0°C (32°F), with highs reaching up to 12°C (54°F) and lows dropping to around -13°C (10°F).

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

January Precipitation in Sarnen

In Sarnen in January, the precipitation amount is 138 mm (5.4 in) over the course of 13 days.

January Precipitation Trends in Sarnen

The chart displays monthly precipitation patterns in Sarnen, 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 Sarnen, January typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 13 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 Sarnen

In Sarnen in January, humidity is 92%. With an average temperature of 0°C (32°F), this humidity feels like a heavy blanket enveloping you as you travel, making every step feel sluggish and the air thick with moisture, which can be both invigorating and exhausting at the same time.

January Average Humidity in Sarnen

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

In Sarnen 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 Sarnen, you can visit Hourly UV Index in Sarnen.

Maximum UV Index Levels in Sarnen for January

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

Data source: Sarnen 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 Sarnen Compares to Other Months

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

This table compares monthly weather conditions in Sarnen, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	138 mm (5.4 inches)	92%	low
February Weather	2°C (36°F)	107 mm (4.2 inches)	89%	moderate
March Weather	4°C (40°F)	126 mm (5.0 inches)	87%	moderate
April Weather	8°C (46°F)	102 mm (4.0 inches)	84%	high
May Weather	11°C (52°F)	172 mm (6.8 inches)	80%	very high
June Weather	16°C (62°F)	202 mm (8.0 inches)	82%	very high
July Weather	18°C (64°F)	199 mm (7.8 inches)	83%	very high
August Weather	18°C (64°F)	193 mm (7.6 inches)	80%	very high
September Weather	14°C (58°F)	138 mm (5.4 inches)	83%	high
October Weather	10°C (50°F)	158 mm (6.2 inches)	90%	moderate
November Weather	5°C (41°F)	97 mm (3.8 inches)	88%	moderate
December Weather	2°C (35°F)	169 mm (6.6 inches)	90%	low