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January Weather in San Juan de Iris, Peru

Last updated: August 27, 2025

In January, the average temperature in San Juan de Iris, Peru hovers around 7°C (46°F). Expect a chill, with minimums plummeting to -1°C (30°F) and highs reaching 17°C (63°F). Be prepared for wet weather, as 273 mm (10.7 in) of precipitation falls over 25 days, contributing to an average humidity of a brisk 91%.

January Temperature in San Juan de Iris

In January in San Juan de Iris, the average temperature is 7°C (46°F). The maximum can reach 17°C (63°F), and the minimum can be as low as -1°C (30°F). It's advisable to pack layers for your trip, as the weather can vary significantly throughout the day.

January Weather in San Juan de Iris: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Juan de Iris, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan de Iris, January typically has an average temperature of 7°C (46°F), with highs reaching up to 17°C (63°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec454545454545454646464646
Data source: Temperature data for San Juan de Iris generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in San Juan de Iris

In San Juan de Iris in January, the precipitation amount is 273 mm (10.7 in), occurring over the course of 25 days.

January Precipitation Trends in San Juan de Iris

The chart displays monthly precipitation patterns in San Juan de Iris, 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 San Juan de Iris, January typically receives around 273 mm (10.7 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec273297361213136493449144209216258
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Juan de Iris

In San Juan de Iris in January humidity is 91%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities feel less invigorating and more exhausting, as the heavy air clings to your skin and makes every breath feel thicker.

January Average Humidity in San Juan de Iris

This chart illustrates the average monthly humidity levels in San Juan de Iris, 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 San Juan de Iris is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%91%89%85%65%47%38%40%56%76%90%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Juan de Iris

In San Juan de Iris in January, the maximum UV index reaches 20, which falls under the extreme Exposure Category. This means that the time to burn is just 10 minutes. To stay informed about the hourly UV Index in San Juan de Iris, you can visit Hourly UV Index in San Juan de Iris.

Maximum UV Index Levels in San Juan de Iris for January

The chart shows the monthly maximum UV Index (UVI) for San Juan de Iris 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 San Juan de Iris typically reaches 20, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec201920181413141517182018
Data source: San Juan de Iris 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 San Juan de Iris Compares to Other Months

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

This table compares monthly weather conditions in San Juan de Iris, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (46°F)273 mm (10.7 inches)91%extreme
February Weather7°C (46°F)297 mm (11.7 inches)90%extreme
March Weather7°C (46°F)361 mm (14.2 inches)91%extreme
April Weather7°C (46°F)213 mm (8.4 inches)89%extreme
May Weather7°C (45°F)136 mm (5.4 inches)85%extreme
June Weather7°C (45°F)49 mm (1.9 inches)65%extreme
July Weather7°C (45°F)34 mm (1.3 inches)47%extreme
August Weather8°C (46°F)49 mm (1.9 inches)38%extreme
September Weather8°C (46°F)144 mm (5.7 inches)40%extreme
October Weather8°C (46°F)209 mm (8.2 inches)56%extreme
November Weather8°C (46°F)216 mm (8.5 inches)76%extreme
December Weather8°C (46°F)258 mm (10.2 inches)90%extreme

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