May Weather in Casma, Peru

Last updated: August 27, 2025

In May, the average temperature in Casma, Peru is a comfortable 20°C (68°F), with temperatures dipping to a minimum of 16°C (61°F) and peaking at a maximum of 26°C (79°F). Expect a modest precipitation amount of 6 mm (0.2 in) over the course of about 1 day, accompanied by an average humidity level of 84%.

May Temperature in Casma

In May in Casma, the average temperature is 20°C (68°F), with maximums reaching 26°C (79°F) and minimums dropping to as low as 16°C (61°F). This makes it an ideal time for travelers to enjoy pleasant weather and outdoor activities.

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

The chart illustrates May temperature patterns in Casma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casma, May typically has an average temperature of 20°C (68°F), with highs reaching up to 26°C (79°F) and lows dropping to around 16°C (61°F).

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

May Precipitation in Casma

In Casma in May, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

May Precipitation Trends in Casma

The chart displays monthly precipitation patterns in Casma, 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 Casma, May typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 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 Casma

In Casma in May humidity is 84%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket, making travel a challenge as the air clings to your skin, and every step feels heavier in the mugginess.

May Average Humidity in Casma

This chart illustrates the average monthly humidity levels in Casma, 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 Casma is approximately 84%, 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 Casma

In Casma in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Casma.

Maximum UV Index Levels in Casma for May

The chart shows the monthly maximum UV Index (UVI) for Casma 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 Casma typically reaches 12, which falls under the extreme exposure category.

Data source: Casma 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 Casma Compares to Other Months

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

This table compares monthly weather conditions in Casma, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (70°F)	30 mm (1.2 inches)	91%	extreme
February Weather	22°C (72°F)	24 mm (1.0 inches)	89%	extreme
March Weather	22°C (72°F)	49 mm (1.9 inches)	89%	extreme
April Weather	21°C (70°F)	17 mm (0.7 inches)	88%	extreme
May Weather	20°C (68°F)	6 mm (0.2 inches)	84%	extreme
June Weather	19°C (67°F)	1 mm (0.0 inches)	73%	very high
July Weather	19°C (66°F)	0 mm (0.0 inches)	55%	very high
August Weather	18°C (65°F)	1 mm (0.0 inches)	53%	extreme
September Weather	18°C (64°F)	5 mm (0.2 inches)	62%	extreme
October Weather	18°C (65°F)	9 mm (0.3 inches)	82%	extreme
November Weather	19°C (66°F)	8 mm (0.3 inches)	89%	extreme
December Weather	20°C (68°F)	28 mm (1.1 inches)	91%	extreme