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September Weather in Alcanena, Portugal

Last updated: August 27, 2025

In September, the average temperature in Alcanena, 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 Alcanena

In September in Alcanena, 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 Alcanena: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Alcanena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alcanena, 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 Alcanena 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 Alcanena

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

September Precipitation Trends in Alcanena

The chart displays monthly precipitation patterns in Alcanena, 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 Alcanena, 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 Alcanena

In Alcanena 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 Alcanena

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

In Alcanena 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 Alcanena.

Maximum UV Index Levels in Alcanena for September

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

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

This table compares monthly weather conditions in Alcanena, 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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