May Weather in Sonsonate, El Salvador

Last updated: August 23, 2025

In May, the average temperature in Sonsonate, El Salvador is a pleasant 26°C (79°F). Expect a minimum of 21°C (69°F) and a comfortable maximum of 32°C (90°F). However, be prepared for fairly wet weather, as the region experiences 310 mm (12.2 in) of precipitation spread over 28 days. The average humidity levels sit at 59%, adding to the tropical feel of the month.

May Temperature in Sonsonate

In May in Sonsonate, the average temperature is a pleasant 26°C (79°F). It can reach a maximum of 32°C (90°F) and drop to a minimum of 21°C (69°F). This makes it an ideal destination for travelers looking to enjoy warm weather and outdoor activities.

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

The chart illustrates May temperature patterns in Sonsonate, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sonsonate, May typically has an average temperature of 26°C (79°F), with highs reaching up to 32°C (90°F) and lows dropping to around 21°C (69°F).

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

May Precipitation in Sonsonate

In Sonsonate in May, the precipitation amount is 310 mm (12.2 in) spread over a period of 28 days.

May Precipitation Trends in Sonsonate

The chart displays monthly precipitation patterns in Sonsonate, 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 Sonsonate, May typically receives around 310 mm (12.2 inches) of precipitation spread over approximately 28 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 Sonsonate

In Sonsonate in May humidity is 59%. With average temperature 26°C (79°F), this humidity feels like a warm embrace that clings to your skin, making outdoor adventures feel sultry yet inviting as you explore the vibrant sights and sounds of the area.

May Average Humidity in Sonsonate

This chart illustrates the average monthly humidity levels in Sonsonate, 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 Sonsonate is approximately 59%, 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 Sonsonate

In Sonsonate 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 Sonsonate, you can check here.

Maximum UV Index Levels in Sonsonate for May

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

Data source: Sonsonate 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 Sonsonate Compares to Other Months

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

This table compares monthly weather conditions in Sonsonate, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (76°F)	7 mm (0.3 inches)	63%	extreme
February Weather	25°C (77°F)	7 mm (0.3 inches)	62%	extreme
March Weather	26°C (79°F)	14 mm (0.6 inches)	59%	extreme
April Weather	26°C (79°F)	70 mm (2.8 inches)	59%	extreme
May Weather	26°C (79°F)	310 mm (12.2 inches)	59%	extreme
June Weather	25°C (78°F)	370 mm (14.6 inches)	68%	extreme
July Weather	26°C (79°F)	208 mm (8.2 inches)	77%	extreme
August Weather	25°C (78°F)	331 mm (13.0 inches)	79%	extreme
September Weather	25°C (77°F)	391 mm (15.4 inches)	77%	extreme
October Weather	25°C (77°F)	389 mm (15.3 inches)	77%	extreme
November Weather	25°C (77°F)	73 mm (2.9 inches)	75%	very high
December Weather	25°C (76°F)	11 mm (0.4 inches)	66%	very high