March Weather in Buenos Aires, Costa Rica

Last updated: August 23, 2025

In March, the average temperature in Buenos Aires, Costa Rica is a comfortable 19°C (67°F). It can dip as low as 12°C (54°F) and peak at a sunny 27°C (80°F). Expect about 35 mm (1.4 in) of precipitation spread over 11 days, along with an average humidity of 66%.

March Temperature in Buenos Aires

In March in Buenos Aires, the average temperature is 19°C (67°F). Maximum can reach 27°C (80°F) and minimum can be as low as 12°C (54°F). This pleasant climate makes it an ideal time for outdoor activities and exploration.

March Weather in Buenos Aires: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Buenos Aires, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Buenos Aires, March typically has an average temperature of 19°C (67°F), with highs reaching up to 27°C (80°F) and lows dropping to around 12°C (54°F).

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

March Precipitation in Buenos Aires

In Buenos Aires in March, the precipitation amount is 35 mm (1.4 in) over a span of 11 days.

March Precipitation Trends in Buenos Aires

The chart displays monthly precipitation patterns in Buenos Aires, 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 Buenos Aires, March typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 11 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 Buenos Aires

In Buenos Aires in March humidity is 66%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket wrapping around you, making it mildly uncomfortable for traveling, as you may find yourself needing to frequently stop for hydration and to seek shade from the sun.

March Average Humidity in Buenos Aires

This chart illustrates the average monthly humidity levels in Buenos Aires, 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 Buenos Aires 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 Buenos Aires

In Buenos Aires 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 Buenos Aires.

Maximum UV Index Levels in Buenos Aires for March

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

Data source: Buenos Aires 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 Buenos Aires Compares to Other Months

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

This table compares monthly weather conditions in Buenos Aires, 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 (66°F)	50 mm (2.0 inches)	68%	extreme
February Weather	19°C (66°F)	42 mm (1.6 inches)	68%	extreme
March Weather	19°C (67°F)	35 mm (1.4 inches)	66%	extreme
April Weather	20°C (68°F)	113 mm (4.5 inches)	67%	extreme
May Weather	20°C (68°F)	397 mm (15.6 inches)	69%	extreme
June Weather	20°C (68°F)	288 mm (11.4 inches)	84%	extreme
July Weather	20°C (68°F)	237 mm (9.3 inches)	85%	extreme
August Weather	20°C (67°F)	354 mm (13.9 inches)	82%	extreme
September Weather	19°C (67°F)	299 mm (11.8 inches)	81%	extreme
October Weather	19°C (67°F)	490 mm (19.3 inches)	80%	extreme
November Weather	19°C (67°F)	304 mm (12.0 inches)	80%	extreme
December Weather	19°C (66°F)	86 mm (3.4 inches)	72%	extreme