January Weather in Arma, Peru

Last updated: August 27, 2025

In January, the average temperature in Arma, Peru hovers around 5°C (41°F). You can expect a chilly atmosphere, with minimum temperatures dipping to -4°C (25°F) and maximums reaching 12°C (55°F). Prepare for significant precipitation, as 230 mm (9.1 in) typically falls over 25 days, accompanied by an average humidity of 89%.

January Temperature in Arma

In January in Arma, the average temperature is 5°C (41°F), with maximums potentially reaching 12°C (55°F) and minimums dropping as low as -4°C (25°F). Travelers should prepare for chilly conditions and dress in layers to stay comfortable.

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

The chart illustrates January temperature patterns in Arma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arma, January typically has an average temperature of 5°C (41°F), with highs reaching up to 12°C (55°F) and lows dropping to around -4°C (25°F).

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

January Precipitation in Arma

In Arma in January, the total precipitation amount reaches 230 mm (9.1 in) over the course of 25 days.

January Precipitation Trends in Arma

The chart displays monthly precipitation patterns in Arma, 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 Arma, January typically receives around 230 mm (9.1 inches) of precipitation spread over approximately 25 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 Arma

In Arma in January humidity is 89%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration less enjoyable and encouraging travelers to seek warmth indoors or layer up to stay comfortable while venturing out.

January Average Humidity in Arma

This chart illustrates the average monthly humidity levels in Arma, 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 Arma is approximately 89%, 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 Arma

In Arma in January, the maximum UV index reaches 19, which corresponds to an extreme exposure category. With a time to burn of just 10 minutes, it’s essential to take precautions. For detailed information, you can check the hourly UV index in Arma.

Maximum UV Index Levels in Arma for January

The chart shows the monthly maximum UV Index (UVI) for Arma 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 Arma typically reaches 19, which falls under the extreme exposure category.

Data source: Arma 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 Arma Compares to Other Months

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

This table compares monthly weather conditions in Arma, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	230 mm (9.1 inches)	89%	extreme
February Weather	5°C (41°F)	257 mm (10.1 inches)	89%	extreme
March Weather	5°C (41°F)	277 mm (10.9 inches)	90%	extreme
April Weather	5°C (41°F)	159 mm (6.2 inches)	89%	extreme
May Weather	4°C (39°F)	101 mm (4.0 inches)	83%	extreme
June Weather	3°C (38°F)	45 mm (1.8 inches)	69%	extreme
July Weather	3°C (38°F)	42 mm (1.6 inches)	56%	extreme
August Weather	4°C (39°F)	58 mm (2.3 inches)	50%	extreme
September Weather	4°C (40°F)	137 mm (5.4 inches)	53%	extreme
October Weather	5°C (40°F)	175 mm (6.9 inches)	68%	extreme
November Weather	5°C (41°F)	173 mm (6.8 inches)	81%	extreme
December Weather	5°C (41°F)	217 mm (8.5 inches)	87%	extreme