March Weather in Mercedes, Costa Rica

Last updated: August 23, 2025

In March, the average temperature in Mercedes, Costa Rica hovers around 20°C (68°F), offering a pleasant climate. Temperatures can dip as low as 13°C (56°F) and peak at 28°C (82°F). With 57 mm (2.3 in) of precipitation spread over 14 days, you might want to carry an umbrella! Expect an average humidity of 66% for a mild, refreshing atmosphere.

March Temperature in Mercedes

In March in Mercedes, the average temperature is 20°C (68°F). Maximums can reach 28°C (82°F), while minimums can drop to as low as 13°C (56°F). This pleasant climate makes it an ideal time for outdoor activities and exploration.

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

The chart illustrates March 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, March typically has an average temperature of 20°C (68°F), with highs reaching up to 28°C (82°F) and lows dropping to around 13°C (56°F).

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

March Precipitation in Mercedes

In Mercedes in March, the precipitation amount is 57 mm (2.3 in) over a span of 14 days.

March Precipitation Trends in Mercedes

The chart displays monthly precipitation patterns in Mercedes, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Mercedes, March typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 14 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Mercedes

In Mercedes in March, humidity is 66%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but potentially a bit sticky, so travelers should stay hydrated and consider light, breathable clothing for comfort.

March Average Humidity in Mercedes

This chart illustrates the average monthly humidity levels in Mercedes, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Mercedes is approximately 66%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Mercedes

In Mercedes in March, 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 March

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

Data source: Mercedes March 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 March 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 March’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 March’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