September Weather in Oltza, Spain

Last updated: August 27, 2025

In Oltza, Spain, the average temperature in September hovers around 18°C (64°F), with a minimum of 4°C (39°F) and a maximum soaring to 32°C (90°F). Expect a moderate precipitation of 44 mm (1.7 in) over approximately 7 days, while the air remains comfortably humid with an average humidity level of 75%.

September Temperature in Oltza

In September in Oltza, the average temperature is 18°C (64°F). Maximum can reach 32°C (90°F) and minimum can be as low as 4°C (39°F). This climate makes Oltza a comfortable destination for travelers looking to enjoy a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Oltza, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oltza, September typically has an average temperature of 18°C (64°F), with highs reaching up to 32°C (90°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Oltza

In Oltza in September, the precipitation amount is 44 mm (1.7 in) spread over a duration of 7 days.

September Precipitation Trends in Oltza

The chart displays monthly precipitation patterns in Oltza, 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 Oltza, September typically receives around 44 mm (1.7 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 Oltza

In Oltza in September, humidity is 75%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket enveloping you, making your travels a bit sticky and requiring frequent breaks in the shade to stay comfortable.

September Average Humidity in Oltza

This chart illustrates the average monthly humidity levels in Oltza, 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 Oltza is approximately 75%, 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 Oltza

In Oltza 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 Oltza.

Maximum UV Index Levels in Oltza for September

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

Data source: Oltza 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 Oltza Compares to Other Months

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

This table compares monthly weather conditions in Oltza, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	79 mm (3.1 inches)	86%	moderate
February Weather	7°C (45°F)	63 mm (2.5 inches)	85%	moderate
March Weather	8°C (47°F)	81 mm (3.2 inches)	82%	high
April Weather	11°C (52°F)	91 mm (3.6 inches)	81%	very high
May Weather	14°C (58°F)	72 mm (2.8 inches)	80%	very high
June Weather	18°C (65°F)	77 mm (3.0 inches)	81%	extreme
July Weather	20°C (69°F)	27 mm (1.1 inches)	80%	very high
August Weather	20°C (69°F)	47 mm (1.8 inches)	76%	very high
September Weather	18°C (64°F)	44 mm (1.7 inches)	75%	high
October Weather	13°C (56°F)	70 mm (2.8 inches)	81%	high
November Weather	8°C (47°F)	98 mm (3.9 inches)	85%	moderate
December Weather	6°C (43°F)	104 mm (4.1 inches)	87%	low