September Weather in Ilo, Peru

Last updated: August 27, 2025

In September, the average temperature in Ilo, Peru is a pleasant 15°C (59°F), with lows dipping to 12°C (54°F) and highs reaching 18°C (65°F). Expect light precipitation of 7 mm (0.3 in) over just 0 days, contributing to an average humidity of 58%. Enjoy the mild climate!

September Temperature in Ilo

In September in Ilo, the average temperature is 15°C (59°F). The maximum can reach 18°C (65°F), while the minimum can be as low as 12°C (54°F). This mild climate makes Ilo an ideal destination for travelers looking to enjoy comfortable outdoor activities.

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

The chart illustrates September temperature patterns in Ilo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ilo, September typically has an average temperature of 15°C (59°F), with highs reaching up to 18°C (65°F) and lows dropping to around 12°C (54°F).

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

September Precipitation in Ilo

In Ilo in September, the precipitation amount is 7 mm (0.3 in) occurring over a span of 0 days.

September Precipitation Trends in Ilo

The chart displays monthly precipitation patterns in Ilo, 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 Ilo, September typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 0 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 Ilo

In Ilo in September humidity is 58%. With an average temperature of 15°C (59°F), this humidity feels like a refreshing embrace, making it ideal for exploring outdoor attractions with just the right amount of comfort.

September Average Humidity in Ilo

This chart illustrates the average monthly humidity levels in Ilo, 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 Ilo is approximately 58%, 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 Ilo

In Ilo in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Ilo.

Maximum UV Index Levels in Ilo for September

The chart shows the monthly maximum UV Index (UVI) for Ilo 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 Ilo typically reaches 13, which falls under the extreme exposure category.

Data source: Ilo 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 Ilo Compares to Other Months

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

This table compares monthly weather conditions in Ilo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (69°F)	10 mm (0.4 inches)	89%	extreme
February Weather	21°C (70°F)	8 mm (0.3 inches)	90%	extreme
March Weather	20°C (69°F)	4 mm (0.1 inches)	90%	extreme
April Weather	18°C (66°F)	2 mm (0.1 inches)	91%	extreme
May Weather	17°C (63°F)	3 mm (0.1 inches)	88%	very high
June Weather	16°C (61°F)	5 mm (0.2 inches)	76%	very high
July Weather	15°C (59°F)	8 mm (0.3 inches)	61%	very high
August Weather	15°C (59°F)	7 mm (0.3 inches)	57%	extreme
September Weather	15°C (59°F)	7 mm (0.3 inches)	58%	extreme
October Weather	16°C (61°F)	5 mm (0.2 inches)	75%	extreme
November Weather	17°C (63°F)	4 mm (0.2 inches)	83%	extreme
December Weather	19°C (66°F)	6 mm (0.2 inches)	84%	extreme