January Weather in Riaz, Switzerland

Last updated: August 27, 2025

The average temperature in Riaz, Switzerland for January is 0°C (33°F), with a minimum dipping to -14°C (8°F) and a maximum reaching 15°C (58°F). Expect a total precipitation of 99 mm (3.9 in) spread over 11 days, and enjoy the crisp air with an average humidity of 91%.

January Temperature in Riaz

In January in Riaz, the average temperature is 0°C (33°F), with maximums reaching 15°C (58°F) and minimums plummeting as low as -14°C (8°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates January temperature patterns in Riaz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riaz, January typically has an average temperature of 0°C (33°F), with highs reaching up to 15°C (58°F) and lows dropping to around -14°C (8°F).

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

January Precipitation in Riaz

In Riaz, in January, the precipitation amount is 99 mm (3.9 in) over the course of 11 days.

January Precipitation Trends in Riaz

The chart displays monthly precipitation patterns in Riaz, 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 Riaz, January typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 11 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 Riaz

In Riaz in January, humidity is 91%. With an average temperature of 0°C (33°F), this humidity feels like an icy dampness that seeps into your bones, making every step feel heavier and requiring extra layers to stay warm while traveling.

January Average Humidity in Riaz

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

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

Maximum UV Index Levels in Riaz for January

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

Data source: Riaz 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 Riaz Compares to Other Months

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

This table compares monthly weather conditions in Riaz, 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 (33°F)	99 mm (3.9 inches)	91%	low
February Weather	3°C (37°F)	85 mm (3.3 inches)	89%	moderate
March Weather	5°C (41°F)	109 mm (4.3 inches)	87%	high
April Weather	9°C (48°F)	61 mm (2.4 inches)	84%	high
May Weather	12°C (54°F)	149 mm (5.9 inches)	80%	very high
June Weather	17°C (63°F)	121 mm (4.7 inches)	82%	very high
July Weather	19°C (66°F)	130 mm (5.1 inches)	82%	very high
August Weather	18°C (65°F)	118 mm (4.7 inches)	77%	very high
September Weather	15°C (58°F)	76 mm (3.0 inches)	81%	high
October Weather	10°C (50°F)	103 mm (4.0 inches)	89%	moderate
November Weather	5°C (41°F)	90 mm (3.5 inches)	89%	moderate
December Weather	2°C (36°F)	160 mm (6.3 inches)	91%	low