May Weather in Peru, United States

Last updated: June 24, 2025

In Peru, United States during May, the average temperature hovers around 17°C (63°F). Temperatures can range from a brisk 0°C (32°F) to a warm 34°C (94°F). Expect precipitation of about 160 mm (6.3 in) over 16 days, with an average humidity level of 79%—creating a unique weather experience for locals and visitors alike.

May Temperature in Peru

In May in Peru, the average temperature is 17°C (63°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 0°C (32°F). This range makes Peru an ideal destination for travelers seeking a mix of warm days and cooler nights, so be sure to pack accordingly!

May Weather in Peru: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Peru, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Peru, May typically has an average temperature of 17°C (63°F), with highs reaching up to 34°C (94°F) and lows dropping to around 0°C (32°F).

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

May Precipitation in Peru

In Peru in May, the total precipitation amount is 160 mm (6.3 in) spread over 16 days.

May Precipitation Trends in Peru

The chart displays monthly precipitation patterns in Peru, 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 Peru, May typically receives around 160 mm (6.3 inches) of precipitation spread over approximately 16 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Peru

In Peru in May, humidity is 79%. With an average temperature of 17°C (63°F), this humidity feels like a warm, muggy embrace, making outdoor activities less comfortable and prompting travelers to seek shaded areas or cool refreshments more frequently.

May Average Humidity in Peru

This chart illustrates the average monthly humidity levels in Peru, 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 Peru is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Peru

In Peru in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Peru.

Maximum UV Index Levels in Peru for May

The chart shows the monthly maximum UV Index (UVI) for Peru 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 Peru typically reaches 9, which falls under the very high exposure category.

Data source: Peru 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 Peru Compares to Other Months

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

This table compares monthly weather conditions in Peru, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	58 mm (2.3 inches)	82%	moderate
February Weather	-2°C (28°F)	64 mm (2.5 inches)	83%	moderate
March Weather	5°C (41°F)	93 mm (3.7 inches)	84%	high
April Weather	10°C (50°F)	114 mm (4.5 inches)	85%	very high
May Weather	17°C (63°F)	160 mm (6.3 inches)	79%	very high
June Weather	23°C (74°F)	152 mm (6.0 inches)	82%	extreme
July Weather	25°C (76°F)	105 mm (4.1 inches)	80%	very high
August Weather	23°C (74°F)	76 mm (3.0 inches)	81%	very high
September Weather	20°C (69°F)	83 mm (3.3 inches)	80%	very high
October Weather	13°C (55°F)	134 mm (5.3 inches)	82%	high
November Weather	4°C (40°F)	54 mm (2.1 inches)	88%	moderate
December Weather	1°C (33°F)	51 mm (2.0 inches)	84%	low