May Weather in Usumatlan, Guatemala

Last updated: August 23, 2025

In May, the average temperature in Usumatlan, Guatemala is a pleasant 25°C (77°F). Visitors can expect a minimum of 17°C (63°F) and may occasionally experience highs of up to 37°C (99°F). With 154 mm (6.0 in) of precipitation spread over 23 days, it's advisable to pack an umbrella or raincoat. The average humidity sits at a comfortable 51%, making it an inviting destination for outdoor adventures.

May Temperature in Usumatlan

In May in Usumatlan, the average temperature is 25°C (77°F), with maximums reaching 37°C (99°F) and minimums dropping as low as 17°C (63°F). This pleasant climate makes it an ideal time for outdoor activities and exploration.

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

The chart illustrates May temperature patterns in Usumatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Usumatlan, May typically has an average temperature of 25°C (77°F), with highs reaching up to 37°C (99°F) and lows dropping to around 17°C (63°F).

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

May Precipitation in Usumatlan

In Usumatlan in May, the precipitation amount is 154 mm (6.0 in) over the course of 23 days.

May Precipitation Trends in Usumatlan

The chart displays monthly precipitation patterns in Usumatlan, 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 Usumatlan, May typically receives around 154 mm (6.0 inches) of precipitation spread over approximately 23 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 Usumatlan

In Usumatlan in May humidity is 51%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making travel enjoyable and invigorating as long as you stay hydrated and take breaks in the shade.

May Average Humidity in Usumatlan

This chart illustrates the average monthly humidity levels in Usumatlan, 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 Usumatlan is approximately 51%, 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 Usumatlan

In Usumatlan 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 Usumatlan, you can check here.

Maximum UV Index Levels in Usumatlan for May

The chart shows the monthly maximum UV Index (UVI) for Usumatlan 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 Usumatlan typically reaches 14, which falls under the extreme exposure category.

Data source: Usumatlan 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 Usumatlan Compares to Other Months

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

This table compares monthly weather conditions in Usumatlan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	19°C (67°F)	27 mm (1.1 inches)	80%	very high
February Weather	21°C (70°F)	25 mm (1.0 inches)	72%	extreme
March Weather	22°C (71°F)	21 mm (0.8 inches)	61%	extreme
April Weather	24°C (76°F)	43 mm (1.7 inches)	53%	extreme
May Weather	25°C (77°F)	154 mm (6.0 inches)	51%	extreme
June Weather	24°C (75°F)	287 mm (11.3 inches)	52%	extreme
July Weather	23°C (73°F)	135 mm (5.3 inches)	58%	extreme
August Weather	23°C (74°F)	184 mm (7.3 inches)	63%	extreme
September Weather	23°C (74°F)	192 mm (7.6 inches)	71%	extreme
October Weather	23°C (73°F)	186 mm (7.3 inches)	79%	extreme
November Weather	21°C (70°F)	93 mm (3.7 inches)	79%	very high
December Weather	20°C (68°F)	33 mm (1.3 inches)	74%	very high