September Weather in Penco, Chile

Last updated: August 22, 2025

In September, the average temperature in Penco, Chile hovers around 10°C (51°F). Expect a minimum of 2°C (35°F) and a maximum of 28°C (83°F). With 65 mm (2.6 in) of precipitation over 7 days, your chances of rain are moderate. Additionally, the average humidity is quite high at 79%, so be prepared for a damp atmosphere!

September Temperature in Penco

In September in Penco, the average temperature is 10°C (51°F). Maximums can reach 28°C (83°F), while minimums can drop as low as 2°C (35°F). This varied climate makes it a great time for travelers to experience both warm and cool weather, so be sure to pack accordingly!

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

The chart illustrates September temperature patterns in Penco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Penco, September typically has an average temperature of 10°C (51°F), with highs reaching up to 28°C (83°F) and lows dropping to around 2°C (35°F).

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

September Precipitation in Penco

In Penco in September, the total precipitation amount is 65 mm (2.6 in) over a span of 7 days.

September Precipitation Trends in Penco

The chart displays monthly precipitation patterns in Penco, 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 Penco, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 7 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 Penco

In Penco in September, humidity is 79%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel somewhat uncomfortable unless you're properly layered.

September Average Humidity in Penco

This chart illustrates the average monthly humidity levels in Penco, 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 Penco is approximately 79%, 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 Penco

In Penco in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Penco.

Maximum UV Index Levels in Penco for September

The chart shows the monthly maximum UV Index (UVI) for Penco 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 Penco typically reaches 7, which falls under the high exposure category.

Data source: Penco 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 Penco Compares to Other Months

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

This table compares monthly weather conditions in Penco, 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)	6 mm (0.3 inches)	68%	extreme
February Weather	18°C (64°F)	7 mm (0.3 inches)	67%	extreme
March Weather	16°C (61°F)	19 mm (0.8 inches)	70%	very high
April Weather	13°C (56°F)	36 mm (1.4 inches)	74%	high
May Weather	11°C (52°F)	107 mm (4.2 inches)	83%	moderate
June Weather	9°C (49°F)	188 mm (7.4 inches)	85%	moderate
July Weather	9°C (48°F)	104 mm (4.1 inches)	86%	moderate
August Weather	9°C (49°F)	106 mm (4.2 inches)	85%	moderate
September Weather	10°C (51°F)	65 mm (2.6 inches)	79%	high
October Weather	12°C (54°F)	41 mm (1.6 inches)	76%	very high
November Weather	15°C (59°F)	20 mm (0.8 inches)	72%	extreme
December Weather	17°C (62°F)	6 mm (0.2 inches)	67%	extreme