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May Weather in San Juan de Iris, Peru

Last updated: August 27, 2025

In May, the average temperature in San Juan de Iris, Peru hovers around 7°C (45°F), with a minimum drop to -1°C (30°F) and a maximum reaching 14°C (57°F). Expect 136 mm (5.4 in) of precipitation spread over 24 days, contributing to an average humidity level of 85%.

May Temperature in San Juan de Iris

In May in San Juan de Iris, the average temperature is 7°C (45°F), with a maximum that can reach 14°C (57°F) and a minimum that can drop as low as -1°C (30°F). Be sure to pack layers to stay comfortable during your travels!

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

The chart illustrates May 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, May typically has an average temperature of 7°C (45°F), with highs reaching up to 14°C (57°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.

May Precipitation in San Juan de Iris

In San Juan de Iris in May, the total precipitation amount is 136 mm (5.4 in), observed over the course of 24 days.

May Precipitation Trends in San Juan de Iris

The chart displays monthly precipitation patterns in San Juan de Iris, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In San Juan de Iris, May typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec273297361213136493449144209216258
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Juan de Iris

In San Juan de Iris in May, humidity is 85%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

May Average Humidity in San Juan de Iris

This chart illustrates the average monthly humidity levels in San Juan de Iris, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in San Juan de Iris is approximately 85%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in San Juan de Iris

In San Juan de Iris in May, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Juan de Iris, you can check here.

Maximum UV Index Levels in San Juan de Iris for May

The chart shows the monthly maximum UV Index (UVI) for San Juan de Iris in May, 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 May, the maximum UV index in San Juan de Iris typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec201920181413141517182018
Data source: San Juan de Iris May 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 May 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 May’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 May’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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