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September Weather in Zalla, Spain

Last updated: August 27, 2025

In September, the average temperature in Zalla, Spain hovers around 18°C (64°F), with a minimum of 9°C (48°F) and a maximum reaching 30°C (86°F). Expect some precipitation, averaging 92 mm (3.6 in) spread across 13 days. With an average humidity of 77%, the weather can feel quite muggy at times, so be prepared for a mix of warmth and moisture!

September Temperature in Zalla

In September in Zalla, the average temperature is 18°C (64°F). Maximums can reach 30°C (86°F), and minimums can be as low as 9°C (48°F). This pleasant climate makes Zalla an ideal destination for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Zalla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Zalla, September typically has an average temperature of 18°C (64°F), with highs reaching up to 30°C (86°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec454850535762666664585148
Data source: Temperature data for Zalla generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Zalla

In Zalla in September, the precipitation amount is 92 mm (3.6 in) spread over 13 days.

September Precipitation Trends in Zalla

The chart displays monthly precipitation patterns in Zalla, 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 Zalla, September typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec111101999884114726792104152147
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Zalla

In Zalla in September humidity is 77%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it feel muggy and potentially uncomfortable for traveling, as sweat clings to your skin and the air thickens around you.

September Average Humidity in Zalla

This chart illustrates the average monthly humidity levels in Zalla, 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 Zalla is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%83%82%81%81%83%87%82%77%80%83%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Zalla

In Zalla 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 Zalla.

Maximum UV Index Levels in Zalla for September

The chart shows the monthly maximum UV Index (UVI) for Zalla 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 Zalla typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Zalla 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 Zalla Compares to Other Months

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

This table compares monthly weather conditions in Zalla, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)111 mm (4.4 inches)85%low
February Weather9°C (49°F)101 mm (4.0 inches)83%moderate
March Weather10°C (50°F)99 mm (3.9 inches)82%high
April Weather11°C (53°F)98 mm (3.8 inches)81%high
May Weather14°C (57°F)84 mm (3.3 inches)81%very high
June Weather17°C (62°F)114 mm (4.5 inches)83%very high
July Weather19°C (66°F)72 mm (2.8 inches)87%very high
August Weather19°C (67°F)67 mm (2.6 inches)82%very high
September Weather18°C (64°F)92 mm (3.6 inches)77%high
October Weather14°C (58°F)104 mm (4.1 inches)80%moderate
November Weather11°C (51°F)152 mm (6.0 inches)83%moderate
December Weather9°C (49°F)147 mm (5.8 inches)85%low

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