January Weather in Sion, Peru

Last updated: August 27, 2025

In January, the average temperature in Sion, Peru hovers around 23°C (74°F). Temperatures can range from a cool 17°C (63°F) to a warm 33°C (92°F). Expect a precipitation amount of 284 mm (11.2 in) spread over 23 rainy days, contributing to an average humidity of about 80%.

January Temperature in Sion

In January in Sion, the average temperature is 23°C (74°F), with maximums reaching up to 33°C (92°F) and minimums dipping as low as 17°C (63°F). It’s a perfect time for travelers to enjoy pleasant weather while exploring the sights.

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

The chart illustrates January temperature patterns in Sion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sion, January typically has an average temperature of 23°C (74°F), with highs reaching up to 33°C (92°F) and lows dropping to around 17°C (63°F).

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

January Precipitation in Sion

In Sion in January, the total precipitation amount reaches 284 mm (11.2 in) over the course of 23 days.

January Precipitation Trends in Sion

The chart displays monthly precipitation patterns in Sion, 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 Sion, January typically receives around 284 mm (11.2 inches) of precipitation spread over approximately 23 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 Sion

In Sion in January humidity is 80%. With an average temperature of 23°C (74°F), this humidity feels like walking through a warm, damp blanket, making travel feel sticky and muggy, where every step leaves you yearning for a cool breeze.

January Average Humidity in Sion

This chart illustrates the average monthly humidity levels in Sion, 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 Sion is approximately 80%, 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 Sion

In Sion in January, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Sion.

Maximum UV Index Levels in Sion for January

The chart shows the monthly maximum UV Index (UVI) for Sion 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 Sion typically reaches 16, which falls under the extreme exposure category.

Data source: Sion 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 Sion Compares to Other Months

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

This table compares monthly weather conditions in Sion, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	284 mm (11.2 inches)	80%	extreme
February Weather	23°C (74°F)	246 mm (9.7 inches)	76%	extreme
March Weather	23°C (73°F)	296 mm (11.7 inches)	81%	extreme
April Weather	23°C (74°F)	202 mm (7.9 inches)	86%	extreme
May Weather	23°C (73°F)	186 mm (7.3 inches)	86%	extreme
June Weather	23°C (73°F)	112 mm (4.4 inches)	70%	extreme
July Weather	22°C (72°F)	74 mm (2.9 inches)	47%	extreme
August Weather	23°C (74°F)	56 mm (2.2 inches)	37%	extreme
September Weather	24°C (76°F)	48 mm (1.9 inches)	42%	extreme
October Weather	24°C (76°F)	170 mm (6.7 inches)	62%	extreme
November Weather	24°C (75°F)	254 mm (10.0 inches)	76%	extreme
December Weather	23°C (74°F)	296 mm (11.7 inches)	89%	extreme