March Weather in Union, Argentina

Last updated: August 22, 2025

In March, the average temperature in Union, Argentina is a pleasant 21°C (71°F). However, be prepared for a temperature range that can dip to a chilly 4°C (39°F) or soar to a sweltering 39°C (102°F). During this month, expect about 65 mm (2.6 in) of precipitation spread over 6 days, and enjoy an average humidity level of 57% that adds to the region's climate charm.

March Temperature in Union

In March in Union, the average temperature is 21°C (71°F). Maximums can reach 39°C (102°F), and minimums can be as low as 4°C (39°F). It's advisable to pack for a variety of weather conditions to fully enjoy your travels in this diverse climate.

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

The chart illustrates March temperature patterns in Union, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Union, March typically has an average temperature of 21°C (71°F), with highs reaching up to 39°C (102°F) and lows dropping to around 4°C (39°F).

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

March Precipitation in Union

In Union, in March, the precipitation amount is 65 mm (2.6 in) over a period of 6 days.

March Precipitation Trends in Union

The chart displays monthly precipitation patterns in Union, 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 Union, March typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 6 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 Union

In Union in March humidity is 57%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making it a pleasant atmosphere for traveling, as long as you're prepared for a slight stickiness in the air that enhances the tropical vibe of the surroundings.

March Average Humidity in Union

This chart illustrates the average monthly humidity levels in Union, 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 Union is approximately 57%, 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 Union

In Union in March, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Union.

Maximum UV Index Levels in Union for March

The chart shows the monthly maximum UV Index (UVI) for Union 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 Union typically reaches 11, which falls under the extreme exposure category.

Data source: Union 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 Union Compares to Other Months

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

This table compares monthly weather conditions in Union, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	54 mm (2.1 inches)	44%	extreme
February Weather	25°C (77°F)	28 mm (1.1 inches)	52%	extreme
March Weather	21°C (71°F)	65 mm (2.6 inches)	57%	extreme
April Weather	18°C (64°F)	57 mm (2.2 inches)	67%	high
May Weather	13°C (56°F)	38 mm (1.5 inches)	70%	moderate
June Weather	9°C (48°F)	24 mm (0.9 inches)	61%	moderate
July Weather	9°C (48°F)	17 mm (0.7 inches)	60%	moderate
August Weather	12°C (53°F)	10 mm (0.4 inches)	55%	high
September Weather	15°C (59°F)	37 mm (1.5 inches)	51%	very high
October Weather	18°C (64°F)	37 mm (1.5 inches)	47%	extreme
November Weather	21°C (71°F)	66 mm (2.6 inches)	46%	extreme
December Weather	25°C (76°F)	58 mm (2.3 inches)	44%	extreme