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September Weather in San Martin de Unx, Spain

Last updated: August 27, 2025

In September, the average temperature in San Martin de Unx, Spain is a pleasant 19°C (67°F). However, temperatures can vary significantly, with a minimum of 6°C (42°F) and a maximum reaching 34°C (93°F). Visitors should also be prepared for 38 mm (1.5 in) of precipitation spread over about 5 days, and a relatively high average humidity of 75%.

September Temperature in San Martin de Unx

In September in San Martin de Unx, the average temperature is 19°C (67°F). Maximums can reach 34°C (93°F), while minimums can drop as low as 6°C (42°F). Pack accordingly to enjoy a comfortable trip, as temperatures can vary significantly throughout the day.

September Weather in San Martin de Unx: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Martin de Unx, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Martin de Unx, September typically has an average temperature of 19°C (67°F), with highs reaching up to 34°C (93°F) and lows dropping to around 6°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec414649546168737367584844
Data source: Temperature data for San Martin de Unx 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 San Martin de Unx

In San Martin de Unx in September, the total precipitation amount is 38 mm (1.5 in) spread over a duration of 5 days.

September Precipitation Trends in San Martin de Unx

The chart displays monthly precipitation patterns in San Martin de Unx, 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 San Martin de Unx, September typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec584462856455142838527571
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Martin de Unx

In San Martin de Unx in September humidity is 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.

September Average Humidity in San Martin de Unx

This chart illustrates the average monthly humidity levels in San Martin de Unx, 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 San Martin de Unx 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 San Martin de Unx

In San Martin de Unx 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 San Martin de Unx.

Maximum UV Index Levels in San Martin de Unx for September

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

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

This table compares monthly weather conditions in San Martin de Unx, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)58 mm (2.3 inches)86%moderate
February Weather8°C (46°F)44 mm (1.7 inches)85%moderate
March Weather9°C (49°F)62 mm (2.4 inches)82%moderate
April Weather12°C (54°F)85 mm (3.4 inches)81%very high
May Weather16°C (61°F)64 mm (2.5 inches)80%very high
June Weather20°C (69°F)55 mm (2.2 inches)81%extreme
July Weather23°C (73°F)14 mm (0.6 inches)80%very high
August Weather23°C (73°F)28 mm (1.1 inches)76%very high
September Weather19°C (67°F)38 mm (1.5 inches)75%very high
October Weather14°C (58°F)52 mm (2.1 inches)81%high
November Weather9°C (49°F)75 mm (3.0 inches)85%moderate
December Weather7°C (44°F)71 mm (2.8 inches)87%low

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