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September Weather in Mutriku, Spain

Last updated: August 27, 2025

In Mutriku, Spain, the average temperature in September hovers around 18°C (65°F). Expect a minimum of 10°C (50°F) and a maximum of 31°C (87°F) during this time. Precipitation levels reach 92 mm (3.6 in) over 12 days, contributing to an average humidity of 77%, creating a relatively damp environment.

September Temperature in Mutriku

In September in Mutriku, the average temperature is 18°C (65°F). Maximum temperatures can reach 31°C (87°F), while minimums can drop to as low as 10°C (50°F). This makes for a pleasant climate, ideal for exploring the sights and enjoying outdoor activities.

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

The chart illustrates September temperature patterns in Mutriku, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mutriku, September typically has an average temperature of 18°C (65°F), with highs reaching up to 31°C (87°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec465051545863676865595350
Data source: Temperature data for Mutriku 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 Mutriku

In Mutriku in September, the precipitation amount is 92 mm (3.6 in) over the course of 12 days.

September Precipitation Trends in Mutriku

The chart displays monthly precipitation patterns in Mutriku, 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 Mutriku, September typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1331171059798109777292118181192
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mutriku

In Mutriku in September humidity is 77%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace that's both refreshing and slightly stifling, making it essential for travelers to stay hydrated and take frequent breaks to enjoy the vibrant surroundings without feeling overly fatigued.

September Average Humidity in Mutriku

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

In Mutriku 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 Mutriku.

Maximum UV Index Levels in Mutriku for September

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

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

This table compares monthly weather conditions in Mutriku, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)133 mm (5.2 inches)85%low
February Weather10°C (50°F)116 mm (4.6 inches)83%moderate
March Weather11°C (51°F)105 mm (4.1 inches)82%high
April Weather12°C (54°F)97 mm (3.8 inches)81%high
May Weather15°C (58°F)98 mm (3.9 inches)81%very high
June Weather17°C (64°F)109 mm (4.3 inches)83%very high
July Weather19°C (67°F)77 mm (3.0 inches)87%very high
August Weather20°C (68°F)72 mm (2.8 inches)82%very high
September Weather18°C (65°F)92 mm (3.6 inches)77%high
October Weather15°C (60°F)118 mm (4.6 inches)80%moderate
November Weather11°C (53°F)181 mm (7.1 inches)83%moderate
December Weather10°C (50°F)192 mm (7.6 inches)85%low

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