May Weather in Metapan, El Salvador

Last updated: August 23, 2025

In May, the average temperature in Metapan, El Salvador is a warm 27°C (81°F), with nighttime lows dipping to a comfortable 20°C (68°F) and daytime highs reaching up to a sizzling 38°C (101°F). Expect 128 mm (5.0 in) of rainfall spread across 19 days, contributing to an average humidity level of 51%.

May Temperature in Metapan

In May in Metapan, the average temperature is 27°C (81°F). Maximums can reach 38°C (101°F), while minimums can be as low as 20°C (68°F). This pleasant climate makes Metapan an ideal destination for travelers seeking warmth and sunshine.

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

The chart illustrates May temperature patterns in Metapan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Metapan, May typically has an average temperature of 27°C (81°F), with highs reaching up to 38°C (101°F) and lows dropping to around 20°C (68°F).

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

May Precipitation in Metapan

In Metapan in May, the total precipitation amount is 128 mm (5.0 in) spread across 19 days.

May Precipitation Trends in Metapan

The chart displays monthly precipitation patterns in Metapan, 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 Metapan, May typically receives around 128 mm (5.0 inches) of precipitation spread over approximately 19 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 Metapan

In Metapan in May humidity is 51%. With an average temperature of 27°C (81°F), this humidity feels like a warm embrace, making travel comfortably enjoyable as long as you stay hydrated and take breaks in the shade.

May Average Humidity in Metapan

This chart illustrates the average monthly humidity levels in Metapan, 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 Metapan 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 Metapan

In Metapan 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 Metapan, you can check here.

Maximum UV Index Levels in Metapan for May

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

Data source: Metapan 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 Metapan Compares to Other Months

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

This table compares monthly weather conditions in Metapan, 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 (75°F)	1 mm (0.0 inches)	80%	extreme
February Weather	25°C (77°F)	2 mm (0.1 inches)	72%	extreme
March Weather	26°C (79°F)	1 mm (0.0 inches)	61%	extreme
April Weather	27°C (81°F)	15 mm (0.6 inches)	53%	extreme
May Weather	27°C (81°F)	128 mm (5.0 inches)	51%	extreme
June Weather	26°C (79°F)	135 mm (5.3 inches)	52%	extreme
July Weather	27°C (80°F)	56 mm (2.2 inches)	58%	extreme
August Weather	26°C (80°F)	87 mm (3.4 inches)	63%	extreme
September Weather	26°C (79°F)	146 mm (5.7 inches)	71%	extreme
October Weather	25°C (78°F)	134 mm (5.3 inches)	79%	extreme
November Weather	25°C (76°F)	35 mm (1.4 inches)	79%	very high
December Weather	24°C (75°F)	3 mm (0.1 inches)	74%	very high