September Weather in Patagonia, United States

Last updated: June 24, 2025

In September, the average temperature in Patagonia, United States is a pleasant 23°C (74°F). Expect lows of 9°C (49°F) and highs reaching 35°C (95°F), making for warm days and cooler nights. With an average precipitation of 34 mm (1.3 in) spread over about 5 days, you might want to keep an umbrella handy. The average humidity sits at a comfortable 72%, creating a balmy atmosphere perfect for outdoor activities.

September Temperature in Patagonia

In September in Patagonia, the average temperature is 23°C (74°F), with maximums reaching 35°C (95°F) and minimums dropping as low as 9°C (49°F). Be prepared for warm days and cooler evenings while enjoying your travels in Patagonia.

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

The chart illustrates September temperature patterns in Patagonia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Patagonia, September typically has an average temperature of 23°C (74°F), with highs reaching up to 35°C (95°F) and lows dropping to around 9°C (49°F).

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

September Precipitation in Patagonia

In Patagonia in September, the precipitation amount is 34 mm (1.3 in) over the course of 5 days.

September Precipitation Trends in Patagonia

The chart displays monthly precipitation patterns in Patagonia, 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 Patagonia, September typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 5 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 Patagonia

In Patagonia in September humidity is 72%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket that clings to the skin, making outdoor activities a challenge but offering a refreshing atmosphere for leisurely strolls in the shade.

September Average Humidity in Patagonia

This chart illustrates the average monthly humidity levels in Patagonia, 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 Patagonia is approximately 72%, 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 Patagonia

In Patagonia in September, 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 Patagonia.

Maximum UV Index Levels in Patagonia for September

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

Data source: Patagonia 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 Patagonia Compares to Other Months

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

This table compares monthly weather conditions in Patagonia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	27 mm (1.1 inches)	74%	moderate
February Weather	9°C (49°F)	35 mm (1.4 inches)	71%	high
March Weather	13°C (55°F)	21 mm (0.8 inches)	60%	very high
April Weather	18°C (64°F)	4 mm (0.2 inches)	43%	extreme
May Weather	21°C (70°F)	4 mm (0.1 inches)	32%	extreme
June Weather	27°C (80°F)	9 mm (0.4 inches)	28%	extreme
July Weather	26°C (78°F)	116 mm (4.6 inches)	38%	extreme
August Weather	25°C (77°F)	90 mm (3.5 inches)	60%	extreme
September Weather	23°C (74°F)	34 mm (1.3 inches)	72%	extreme
October Weather	19°C (66°F)	13 mm (0.5 inches)	66%	very high
November Weather	14°C (58°F)	25 mm (1.0 inches)	74%	high
December Weather	9°C (48°F)	25 mm (1.0 inches)	81%	moderate