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September Weather in Portillo, Spain

Last updated: August 27, 2025

In Portillo, Spain, the average temperature in September hovers around 19°C (66°F), with a minimum of 4°C (39°F) and a maximum reaching up to 35°C (95°F). This month sees an average precipitation of 27 mm (1.1 in) spread over 5 days, contributing to a comfortable average humidity of 65%. Perfect for enjoying the balanced climate!

September Temperature in Portillo

In September in Portillo, the average temperature is 19°C (66°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 4°C (39°F). This pleasant range makes Portillo an ideal destination for travelers seeking a comfortable climate.

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

The chart illustrates September temperature patterns in Portillo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portillo, September typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec394448526168747466574642
Data source: Temperature data for Portillo 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 Portillo

In Portillo in September, the precipitation amount is 27 mm (1.1 in) over a period of 5 days.

September Precipitation Trends in Portillo

The chart displays monthly precipitation patterns in Portillo, 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 Portillo, September typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec364352774343161127546354
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Portillo

In Portillo in September humidity is 65%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making outdoor activities refreshing but slightly sticky, so it's advisable to stay hydrated and take breaks in shaded areas while exploring.

September Average Humidity in Portillo

This chart illustrates the average monthly humidity levels in Portillo, 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 Portillo is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%86%79%74%71%63%59%58%66%77%87%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Portillo

In Portillo 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 Portillo.

Maximum UV Index Levels in Portillo for September

The chart shows the monthly maximum UV Index (UVI) for Portillo 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 Portillo typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3478101111108642
Data source: Portillo 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 Portillo Compares to Other Months

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

This table compares monthly weather conditions in Portillo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)36 mm (1.4 inches)90%moderate
February Weather7°C (45°F)43 mm (1.7 inches)86%moderate
March Weather9°C (48°F)52 mm (2.0 inches)79%high
April Weather11°C (53°F)77 mm (3.0 inches)74%very high
May Weather16°C (61°F)43 mm (1.7 inches)71%very high
June Weather20°C (69°F)43 mm (1.7 inches)63%extreme
July Weather24°C (75°F)16 mm (0.6 inches)59%extreme
August Weather23°C (74°F)11 mm (0.4 inches)58%very high
September Weather19°C (66°F)27 mm (1.1 inches)65%very high
October Weather14°C (57°F)54 mm (2.1 inches)77%high
November Weather8°C (47°F)63 mm (2.5 inches)87%moderate
December Weather6°C (43°F)54 mm (2.1 inches)90%low

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