September Weather in Rengo, Chile

Last updated: August 22, 2025

In September, the average temperature in Rengo, Chile hovers around 8°C (47°F), with extremes ranging from a chilly -8°C (17°F) to a warm 25°C (78°F). Expect about 59 mm (2.3 in) of precipitation over 7 days, and enjoy a comfortable average humidity of 62%.

September Temperature in Rengo

In September in Rengo, the average temperature is 8°C (47°F). Maximum temperatures can reach 25°C (78°F), while minimum temperatures can dip as low as -8°C (17°F). This diverse temperature range makes it essential to pack layers for your travels.

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

The chart illustrates September temperature patterns in Rengo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rengo, September typically has an average temperature of 8°C (47°F), with highs reaching up to 25°C (78°F) and lows dropping to around -8°C (17°F).

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

September Precipitation in Rengo

In Rengo in September, the precipitation amount is 59 mm (2.3 in) over a span of 7 days.

September Precipitation Trends in Rengo

The chart displays monthly precipitation patterns in Rengo, 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 Rengo, September typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Rengo

In Rengo in September, humidity is 62%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less inviting and encouraging cozy indoor activities instead.

September Average Humidity in Rengo

This chart illustrates the average monthly humidity levels in Rengo, 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 Rengo is approximately 62%, 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 Rengo

In Rengo in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Rengo.

Maximum UV Index Levels in Rengo for September

The chart shows the monthly maximum UV Index (UVI) for Rengo 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 Rengo typically reaches 8, which falls under the very high exposure category.

Data source: Rengo 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 Rengo Compares to Other Months

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

This table compares monthly weather conditions in Rengo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (65°F)	25 mm (1.0 inches)	40%	extreme
February Weather	18°C (64°F)	12 mm (0.5 inches)	41%	extreme
March Weather	16°C (61°F)	12 mm (0.5 inches)	46%	extreme
April Weather	12°C (54°F)	26 mm (1.0 inches)	54%	very high
May Weather	9°C (48°F)	73 mm (2.9 inches)	70%	moderate
June Weather	5°C (41°F)	179 mm (7.1 inches)	78%	moderate
July Weather	5°C (41°F)	97 mm (3.8 inches)	82%	moderate
August Weather	6°C (43°F)	99 mm (3.9 inches)	79%	high
September Weather	8°C (47°F)	59 mm (2.3 inches)	62%	very high
October Weather	11°C (52°F)	68 mm (2.7 inches)	64%	extreme
November Weather	14°C (58°F)	26 mm (1.0 inches)	53%	extreme
December Weather	17°C (63°F)	9 mm (0.4 inches)	39%	extreme