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September Weather in Porto do Son, Spain

Last updated: August 27, 2025

In September, the average temperature in Porto do Son, Spain hovers around 19°C (66°F). Expect a pleasant range where the minimum can dip to 10°C (51°F) and the maximum can soar to 32°C (90°F). With an average humidity level of 79%, the weather can feel a bit muggy at times. Additionally, prepare for some rain, as precipitation amounts to 48 mm (1.9 in) over about 8 days.

September Temperature in Porto do Son

In September in Porto do Son, the average temperature is 19°C (66°F). The maximum can reach 32°C (90°F), while the minimum can be as low as 10°C (51°F). This mild climate makes Porto do Son an ideal destination for travelers seeking comfortable weather and a pleasant outdoor experience.

September Weather in Porto do Son: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Porto do Son, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porto do Son, September typically has an average temperature of 19°C (66°F), with highs reaching up to 32°C (90°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec505253556063676766615452
Data source: Temperature data for Porto do Son 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 Porto do Son

In Porto do Son in September, the precipitation amount is 48 mm (1.9 in) over a span of 8 days.

September Precipitation Trends in Porto do Son

The chart displays monthly precipitation patterns in Porto do Son, 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 Porto do Son, September typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec12516115012510269303748140194217
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Porto do Son

In Porto do Son in September humidity is 79%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making it feel much warmer than the actual temperature and creating a heavy, sticky atmosphere that can be a bit uncomfortable for traveling.

September Average Humidity in Porto do Son

This chart illustrates the average monthly humidity levels in Porto do Son, 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 Porto do Son is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%83%82%83%83%83%82%78%79%82%84%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Porto do Son

In Porto do Son 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 Porto do Son.

Maximum UV Index Levels in Porto do Son for September

The chart shows the monthly maximum UV Index (UVI) for Porto do Son 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 Porto do Son typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997632
Data source: Porto do Son 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 Porto do Son Compares to Other Months

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

This table compares monthly weather conditions in Porto do Son, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)125 mm (4.9 inches)84%low
February Weather11°C (52°F)161 mm (6.4 inches)83%moderate
March Weather12°C (53°F)150 mm (5.9 inches)82%moderate
April Weather13°C (56°F)125 mm (4.9 inches)83%very high
May Weather16°C (61°F)102 mm (4.0 inches)83%very high
June Weather17°C (63°F)69 mm (2.7 inches)83%very high
July Weather19°C (67°F)30 mm (1.2 inches)82%very high
August Weather19°C (67°F)37 mm (1.4 inches)78%very high
September Weather19°C (66°F)48 mm (1.9 inches)79%high
October Weather16°C (61°F)140 mm (5.5 inches)82%high
November Weather12°C (55°F)193 mm (7.6 inches)84%moderate
December Weather11°C (53°F)217 mm (8.5 inches)85%low

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