May Weather in Union, Argentina

Last updated: August 22, 2025

In May, the average temperature in Union, Argentina hovers around 13°C (56°F). Expect a minimum of -4°C (26°F) and a maximum peak of 33°C (92°F). With an average humidity of 70% and 38 mm (1.5 in) of precipitation spread across 4 days, it's wise to prepare for a mix of weather conditions!

May Temperature in Union

In May in Union, the average temperature is 13°C (56°F). The maximum can reach 33°C (92°F) and the minimum can be as low as -4°C (26°F). Be prepared for a wide range of temperatures when traveling to Union during this month.

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

The chart illustrates May 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, May typically has an average temperature of 13°C (56°F), with highs reaching up to 33°C (92°F) and lows dropping to around -4°C (26°F).

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

May Precipitation in Union

In Union in May, the total precipitation amount is 38 mm (1.5 in) spread over the course of 4 days.

May Precipitation Trends in Union

The chart displays monthly precipitation patterns in Union, 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 Union, May typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 4 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 Union

In Union in May humidity is 70%. With an average temperature of 13°C (56°F), this humidity feels like a chilly embrace, making travel feel a bit damp and heavy. Be prepared for a refreshing yet cool atmosphere that might surprise you as you explore the sights.

May Average Humidity in Union

This chart illustrates the average monthly humidity levels in Union, 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 Union is approximately 70%, 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 Union

In Union in May, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Union.

Maximum UV Index Levels in Union for May

The chart shows the monthly maximum UV Index (UVI) for Union 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 Union typically reaches 5, which falls under the moderate exposure category.

Data source: Union 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 Union Compares to Other Months

Weather in Union varies notably across the year, with each month offering distinct climate conditions. This page compares May’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 May’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