September Weather in Onil, Spain

Last updated: August 27, 2025

In September, the average temperature in Onil, Spain hovers around 21°C (71°F), making it a pleasant time to visit. Temperatures can vary significantly, with a minimum of 9°C (49°F) and a maximum soaring to 33°C (92°F). Expect some rain, as 90 mm (3.6 in) of precipitation falls over approximately 10 days, while the average humidity sits at a comfortable 58%.

September Temperature in Onil

In September in Onil, the average temperature is 21°C (71°F), with maximums reaching 33°C (92°F) and minimums dropping as low as 9°C (49°F). This range makes it an ideal time for travelers to enjoy outdoor activities while also being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Onil, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onil, September typically has an average temperature of 21°C (71°F), with highs reaching up to 33°C (92°F) and lows dropping to around 9°C (49°F).

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

September Precipitation in Onil

In Onil in September, the precipitation amount is 90 mm (3.6 in) spread over the course of 10 days.

September Precipitation Trends in Onil

The chart displays monthly precipitation patterns in Onil, 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 Onil, September typically receives around 90 mm (3.6 inches) of precipitation spread over approximately 10 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 Onil

In Onil in September humidity is 58%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making it pleasant for traveling but slightly sticky during outdoor activities.

September Average Humidity in Onil

This chart illustrates the average monthly humidity levels in Onil, 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 Onil 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 Onil

In Onil 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 Onil.

Maximum UV Index Levels in Onil for September

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

Data source: Onil 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 Onil Compares to Other Months

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

This table compares monthly weather conditions in Onil, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (46°F)	57 mm (2.2 inches)	78%	moderate
February Weather	10°C (50°F)	19 mm (0.7 inches)	75%	moderate
March Weather	11°C (53°F)	63 mm (2.5 inches)	64%	high
April Weather	13°C (56°F)	76 mm (3.0 inches)	58%	very high
May Weather	18°C (65°F)	35 mm (1.4 inches)	53%	very high
June Weather	22°C (73°F)	46 mm (1.8 inches)	49%	extreme
July Weather	26°C (79°F)	8 mm (0.3 inches)	51%	extreme
August Weather	26°C (79°F)	32 mm (1.2 inches)	51%	very high
September Weather	21°C (71°F)	90 mm (3.6 inches)	58%	very high
October Weather	17°C (63°F)	48 mm (1.9 inches)	71%	high
November Weather	12°C (53°F)	54 mm (2.1 inches)	76%	moderate
December Weather	9°C (49°F)	24 mm (1.0 inches)	80%	moderate