August Weather in Mercedes, Costa Rica

Last updated: August 23, 2025

In August, the average temperature in Mercedes, Costa Rica is a pleasant 20°C (68°F). Expect a minimum of 15°C (59°F) and a comfortable maximum of 27°C (80°F). However, be prepared for significant precipitation, with 589 mm (23.2 in) expected over the course of 31 days. The average humidity is also high, at 82%, making it a true tropical experience!

August Temperature in Mercedes

In August in Mercedes, the average temperature is 20°C (68°F). Maximum temperatures can reach 27°C (80°F), while minimums can drop as low as 15°C (59°F). This mild climate makes Mercedes an ideal destination for travelers seeking comfortable weather conditions.

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

The chart illustrates August 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, August typically has an average temperature of 20°C (68°F), with highs reaching up to 27°C (80°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.

August Precipitation in Mercedes

In Mercedes in August, the total precipitation amount is 589 mm (23.2 in) over the course of 31 days.

August Precipitation Trends in Mercedes

The chart displays monthly precipitation patterns in Mercedes, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Mercedes, August typically receives around 589 mm (23.2 inches) of precipitation spread over approximately 31 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Mercedes

In Mercedes in August humidity is 82%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit sluggish but surprisingly refreshing, as long as you take breaks in shaded areas to cool off.

August Average Humidity in Mercedes

This chart illustrates the average monthly humidity levels in Mercedes, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Mercedes is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Mercedes

In Mercedes in August, 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 Mercedes, you can check here.

Maximum UV Index Levels in Mercedes for August

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

Data source: Mercedes August 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 August 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 August’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 August’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