September Weather in Illapel, Chile

Last updated: August 22, 2025

In Illapel, Chile, the average temperature in September hovers around 12°C (54°F). Expect a range from a chilly 3°C (38°F) to a warm 29°C (84°F). During this month, anticipate 13 mm (0.5 in) of precipitation over approximately 3 days, while enjoying an average humidity level of 50%.

September Temperature in Illapel

In September in Illapel, the average temperature is 12°C (54°F). Maximums can reach 29°C (84°F), while minimums can dip as low as 3°C (38°F). This makes it an ideal time for travelers to experience a comfortable climate while exploring the region.

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

The chart illustrates September temperature patterns in Illapel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Illapel, September typically has an average temperature of 12°C (54°F), with highs reaching up to 29°C (84°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Illapel

In Illapel in September, the precipitation amount is 13 mm (0.5 in) over a span of 3 days.

September Precipitation Trends in Illapel

The chart displays monthly precipitation patterns in Illapel, 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 Illapel, September typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 3 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 Illapel

In Illapel in September, humidity is 50%. With an average temperature of 12°C (54°F), this humidity feels like a crisp breath of fresh air, making it quite pleasant for traveling, as long as you're dressed for the cool temperatures.

September Average Humidity in Illapel

This chart illustrates the average monthly humidity levels in Illapel, 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 Illapel is approximately 50%, 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 Illapel

In Illapel in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Illapel.

Maximum UV Index Levels in Illapel for September

The chart shows the monthly maximum UV Index (UVI) for Illapel 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 Illapel typically reaches 9, which falls under the very high exposure category.

Data source: Illapel 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 Illapel Compares to Other Months

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

This table compares monthly weather conditions in Illapel, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	19°C (66°F)	0 mm (0.0 inches)	39%	extreme
February Weather	19°C (66°F)	1 mm (0.1 inches)	40%	extreme
March Weather	17°C (63°F)	1 mm (0.1 inches)	46%	extreme
April Weather	15°C (59°F)	5 mm (0.2 inches)	50%	very high
May Weather	12°C (54°F)	48 mm (1.9 inches)	58%	high
June Weather	10°C (50°F)	65 mm (2.6 inches)	62%	moderate
July Weather	9°C (49°F)	28 mm (1.1 inches)	67%	moderate
August Weather	10°C (51°F)	19 mm (0.7 inches)	64%	high
September Weather	12°C (54°F)	13 mm (0.5 inches)	50%	very high
October Weather	14°C (57°F)	9 mm (0.4 inches)	48%	extreme
November Weather	16°C (62°F)	2 mm (0.1 inches)	41%	extreme
December Weather	18°C (64°F)	1 mm (0.0 inches)	35%	extreme