May Weather in Castelo do Piaui, Brazil

Last updated: August 22, 2025

In Castelo do Piaui, Brazil, the average temperature in May is a comfortable 27°C (82°F). Expect the mercury to dip to a minimum of 21°C (69°F) and occasionally soar to a maximum of 37°C (98°F). During this time, the area receives around 42 mm (1.7 in) of precipitation over 7 days, contributing to an average humidity level of 88%. 🌧️

May Temperature in Castelo do Piaui

In May in Castelo do Piaui, the average temperature is 27°C (82°F), with maximums reaching up to 37°C (98°F) and minimums dropping as low as 21°C (69°F). It's a wonderful time for travelers to enjoy warm weather while exploring the vibrant culture and attractions of the area.

May Weather in Castelo do Piaui: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Castelo do Piaui, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castelo do Piaui, May typically has an average temperature of 27°C (82°F), with highs reaching up to 37°C (98°F) and lows dropping to around 21°C (69°F).

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

May Precipitation in Castelo do Piaui

In Castelo do Piaui in May, the total precipitation amount is 42 mm (1.7 in) over the course of 7 days.

May Precipitation Trends in Castelo do Piaui

The chart displays monthly precipitation patterns in Castelo do Piaui, 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 Castelo do Piaui, May typically receives around 42 mm (1.7 inches) of precipitation spread over approximately 7 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 Castelo do Piaui

In Castelo do Piaui in May humidity is 88%. With an average temperature of 27°C (82°F), this humidity feels like a warm, enveloping blanket that can be quite discomforting for traveling, leaving you drenched in sweat and longing for a cool breeze.

May Average Humidity in Castelo do Piaui

This chart illustrates the average monthly humidity levels in Castelo do Piaui, 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 Castelo do Piaui is approximately 88%, 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 Castelo do Piaui

In Castelo do Piaui in May, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Castelo do Piaui.

Maximum UV Index Levels in Castelo do Piaui for May

The chart shows the monthly maximum UV Index (UVI) for Castelo do Piaui 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 Castelo do Piaui typically reaches 13, which falls under the extreme exposure category.

Data source: Castelo do Piaui 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 Castelo do Piaui Compares to Other Months

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

This table compares monthly weather conditions in Castelo do Piaui, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	28°C (83°F)	116 mm (4.6 inches)	90%	extreme
February Weather	27°C (81°F)	263 mm (10.4 inches)	91%	extreme
March Weather	27°C (80°F)	298 mm (11.7 inches)	93%	extreme
April Weather	27°C (80°F)	177 mm (7.0 inches)	93%	extreme
May Weather	27°C (82°F)	42 mm (1.7 inches)	88%	extreme
June Weather	28°C (83°F)	3 mm (0.1 inches)	75%	extreme
July Weather	28°C (83°F)	7 mm (0.3 inches)	55%	extreme
August Weather	30°C (86°F)	1 mm (0.0 inches)	46%	extreme
September Weather	31°C (88°F)	1 mm (0.0 inches)	41%	extreme
October Weather	31°C (89°F)	7 mm (0.3 inches)	38%	extreme
November Weather	31°C (88°F)	20 mm (0.8 inches)	43%	extreme
December Weather	30°C (86°F)	38 mm (1.5 inches)	67%	extreme