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September Weather in Porto de Mos, Portugal

Last updated: August 27, 2025

In September, the average temperature in Porto de Mos, Portugal hovers around 20°C (69°F). You can expect a minimum of 10°C (50°F) and a soaring maximum of 38°C (100°F). The region receives an average precipitation of 35 mm (1.4 in) over 4 days, contributing to a comfortable average humidity of 67%.

September Temperature in Porto de Mos

In September in Porto de Mos, the average temperature is 20°C (69°F). Maximum temperatures can reach as high as 38°C (100°F), while minimum temperatures can drop to a chilly 10°C (50°F). Be prepared for warm days and cooler nights if you're traveling during this time.

September Weather in Porto de Mos: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Porto de Mos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porto de Mos, September typically has an average temperature of 20°C (69°F), with highs reaching up to 38°C (100°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec485355576366697069635552
Data source: Temperature data for Porto de Mos 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 de Mos

In Porto de Mos in September, the precipitation amount is 35 mm (1.4 in) over a span of 4 days.

September Precipitation Trends in Porto de Mos

The chart displays monthly precipitation patterns in Porto de Mos, 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 de Mos, September typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec5064103111572268357510777
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Porto de Mos

In Porto de Mos in September, humidity is 67%. With an average temperature of 20°C (69°F), this humidity feels like a warm, gentle embrace that clings to your skin, creating a comfortable yet slightly sticky atmosphere that can be refreshing while exploring the sights, provided you stay hydrated and take breaks in the shade.

September Average Humidity in Porto de Mos

This chart illustrates the average monthly humidity levels in Porto de Mos, 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 de Mos is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%75%72%70%70%63%60%60%68%74%83%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Porto de Mos

In Porto de Mos 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 Porto de Mos.

Maximum UV Index Levels in Porto de Mos for September

The chart shows the monthly maximum UV Index (UVI) for Porto de Mos 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 de Mos typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346910111098643
Data source: Porto de Mos 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 de Mos Compares to Other Months

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

This table compares monthly weather conditions in Porto de Mos, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)50 mm (2.0 inches)85%moderate
February Weather11°C (53°F)64 mm (2.5 inches)75%moderate
March Weather13°C (55°F)103 mm (4.0 inches)72%high
April Weather14°C (58°F)111 mm (4.4 inches)70%very high
May Weather17°C (64°F)57 mm (2.2 inches)70%very high
June Weather19°C (66°F)22 mm (0.9 inches)63%extreme
July Weather21°C (70°F)6 mm (0.2 inches)60%very high
August Weather21°C (70°F)7 mm (0.3 inches)60%very high
September Weather20°C (69°F)35 mm (1.4 inches)67%very high
October Weather17°C (63°F)75 mm (2.9 inches)74%high
November Weather13°C (55°F)107 mm (4.2 inches)83%moderate
December Weather11°C (52°F)77 mm (3.0 inches)85%moderate

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