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September Weather in Biota, Spain

Last updated: August 27, 2025

In September, the average temperature in Biota, Spain is a pleasant 20°C (68°F). However, temperatures can vary dramatically, dipping to a chilly 5°C (41°F) at night and soaring to a sweltering 34°C (93°F) during the day. Expect about 57 mm (2.2 in) of precipitation spread over 7 days, contributing to an average humidity of 75%.

September Temperature in Biota

In September in Biota, the average temperature is 20°C (68°F). Maximums can reach 34°C (93°F) and minimums can be as low as 5°C (41°F). Travelers should be prepared for warm days and cool nights, making layering essentials for this time of year.

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

The chart illustrates September temperature patterns in Biota, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Biota, September typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec414650546270757567594944
Data source: Temperature data for Biota 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 Biota

In Biota in September, the precipitation amount is 57 mm (2.2 in) over the course of 7 days.

September Precipitation Trends in Biota

The chart displays monthly precipitation patterns in Biota, 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 Biota, September typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec504262936763293557537959
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Biota

In Biota in September, humidity is 75%. With an average temperature of 20°C (68°F), this humidity feels like a warm, muggy embrace that can leave travelers feeling sticky and exhausted.

September Average Humidity in Biota

This chart illustrates the average monthly humidity levels in Biota, 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 Biota is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%83%81%80%81%80%76%75%81%85%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Biota

In Biota in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Biota.

Maximum UV Index Levels in Biota for September

The chart shows the monthly maximum UV Index (UVI) for Biota 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 Biota typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589111098632
Data source: Biota 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 Biota Compares to Other Months

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

This table compares monthly weather conditions in Biota, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)50 mm (2.0 inches)86%moderate
February Weather8°C (47°F)42 mm (1.7 inches)85%moderate
March Weather10°C (50°F)62 mm (2.4 inches)82%moderate
April Weather12°C (55°F)93 mm (3.7 inches)81%very high
May Weather17°C (63°F)67 mm (2.6 inches)80%very high
June Weather21°C (70°F)63 mm (2.5 inches)81%extreme
July Weather24°C (75°F)29 mm (1.2 inches)80%very high
August Weather24°C (75°F)35 mm (1.4 inches)76%very high
September Weather20°C (68°F)57 mm (2.2 inches)75%very high
October Weather15°C (59°F)53 mm (2.1 inches)81%high
November Weather9°C (49°F)79 mm (3.1 inches)85%moderate
December Weather7°C (44°F)59 mm (2.3 inches)87%low

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