September Weather in Union, Paraguay

Last updated: August 31, 2025

In September, the average temperature in Union, Paraguay hovers around 24°C (75°F). However, temperatures can range from a chilly 10°C (50°F) to a scorching 41°C (106°F). Expect about 70 mm (2.8 in) of precipitation over 6 days, and with an average humidity of 47%, the weather can feel quite pleasant.

September Temperature in Union

In September in Union, the average temperature is 24°C (75°F), with maximums reaching 41°C (106°F) and minimums dropping as low as 10°C (50°F). This weather makes it a great time for travelers to enjoy both warm sunshine and cooler evenings.

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

The chart illustrates September 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, September typically has an average temperature of 24°C (75°F), with highs reaching up to 41°C (106°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Union

In Union in September, the precipitation amount is 70 mm (2.8 in) over the course of 6 days.

September Precipitation Trends in Union

The chart displays monthly precipitation patterns in Union, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Union, September typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 6 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Union

In Union in September, humidity is 47%. With an average temperature of 24°C (75°F), this humidity feels like a refreshing embrace, making outdoor activities enjoyable but also reminding travelers to stay hydrated and take breaks in the shade.

September Average Humidity in Union

This chart illustrates the average monthly humidity levels in Union, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Union is approximately 47%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Union

In Union in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Union.

Maximum UV Index Levels in Union for September

The chart shows the monthly maximum UV Index (UVI) for Union in September, 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 September, the maximum UV index in Union typically reaches 10, which falls under the very high exposure category.

Data source: Union September 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 September 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 September’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 September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	28°C (82°F)	142 mm (5.6 inches)	80%	extreme
February Weather	27°C (81°F)	102 mm (4.0 inches)	75%	extreme
March Weather	26°C (79°F)	102 mm (4.0 inches)	76%	extreme
April Weather	23°C (74°F)	137 mm (5.4 inches)	76%	extreme
May Weather	20°C (69°F)	120 mm (4.7 inches)	75%	high
June Weather	19°C (66°F)	88 mm (3.5 inches)	65%	high
July Weather	18°C (65°F)	36 mm (1.4 inches)	60%	high
August Weather	20°C (69°F)	66 mm (2.6 inches)	43%	very high
September Weather	24°C (75°F)	70 mm (2.8 inches)	47%	very high
October Weather	25°C (77°F)	194 mm (7.6 inches)	52%	extreme
November Weather	26°C (79°F)	136 mm (5.4 inches)	71%	extreme
December Weather	27°C (81°F)	150 mm (5.9 inches)	84%	extreme