May Weather in Mercedes, Costa Rica

Last updated: August 23, 2025

In Mercedes, Costa Rica, the average temperature in May hovers around 20°C (69°F), making it a pleasant time to visit. Expect a minimum of 15°C (59°F) and a maximum of 27°C (81°F), providing a comfortable climate for outdoor activities. However, be prepared for some rain, as the region experiences an average precipitation of 609 mm (24.0 in) over 31 days, with humidity levels at 69%.

May Temperature in Mercedes

In May in Mercedes, the average temperature is 20°C (69°F). Maximum temperatures can reach 27°C (81°F), while minimums can drop as low as 15°C (59°F). This mild climate makes it an ideal time for outdoor activities and sightseeing.

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

The chart illustrates May temperature patterns in Mercedes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mercedes, May typically has an average temperature of 20°C (69°F), with highs reaching up to 27°C (81°F) and lows dropping to around 15°C (59°F).

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

May Precipitation in Mercedes

In Mercedes in May, the total precipitation amount is 609 mm (24.0 in) over the course of 31 days.

May Precipitation Trends in Mercedes

The chart displays monthly precipitation patterns in Mercedes, 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 Mercedes, May typically receives around 609 mm (24.0 inches) of precipitation spread over approximately 31 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 Mercedes

In Mercedes in May humidity is 69%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping embrace, making travel feel both refreshing and slightly sticky, as you navigate the vibrant atmosphere with a pleasant sheen of perspiration glistening on your skin.

May Average Humidity in Mercedes

This chart illustrates the average monthly humidity levels in Mercedes, 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 Mercedes is approximately 69%, 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 Mercedes

In Mercedes in May, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Mercedes.

Maximum UV Index Levels in Mercedes for May

The chart shows the monthly maximum UV Index (UVI) for Mercedes 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 Mercedes typically reaches 15, which falls under the extreme exposure category.

Data source: Mercedes 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 Mercedes Compares to Other Months

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

This table compares monthly weather conditions in Mercedes, 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)	89 mm (3.5 inches)	68%	extreme
February Weather	20°C (68°F)	44 mm (1.8 inches)	68%	extreme
March Weather	20°C (68°F)	57 mm (2.3 inches)	66%	extreme
April Weather	20°C (69°F)	251 mm (9.9 inches)	67%	extreme
May Weather	20°C (69°F)	609 mm (24.0 inches)	69%	extreme
June Weather	20°C (69°F)	568 mm (22.4 inches)	84%	extreme
July Weather	20°C (69°F)	477 mm (18.8 inches)	85%	extreme
August Weather	20°C (68°F)	589 mm (23.2 inches)	82%	extreme
September Weather	20°C (68°F)	536 mm (21.1 inches)	81%	extreme
October Weather	20°C (68°F)	802 mm (31.6 inches)	80%	extreme
November Weather	20°C (67°F)	620 mm (24.4 inches)	80%	extreme
December Weather	19°C (67°F)	191 mm (7.5 inches)	72%	extreme