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September Weather in Trevoes, Portugal

Last updated: August 27, 2025

In September, the average temperature in Trevoes, Portugal hovers around 19°C (66°F). Expect a range from a chilly 6°C (44°F) to a warm 33°C (92°F). During this month, the area experiences an average precipitation of 37 mm (1.5 in) over 4 days, with humidity levels at a comfortable 71%. Prepare for a delightful blend of warmth and refreshing breezes!

September Temperature in Trevoes

In September in Trevoes, the average temperature is 19°C (66°F). Maximums can reach 33°C (92°F), and minimums can be as low as 6°C (44°F). This variation makes it essential for travelers to pack versatile clothing to comfortably enjoy the diverse weather conditions.

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

The chart illustrates September temperature patterns in Trevoes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trevoes, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec424749536165707065584945
Data source: Temperature data for Trevoes 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 Trevoes

In Trevoes in September, the precipitation amount is 37 mm (1.5 in) over the course of 4 days.

September Precipitation Trends in Trevoes

The chart displays monthly precipitation patterns in Trevoes, 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 Trevoes, September typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec346979853437171437597285
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trevoes

In Trevoes in September humidity is 71%. With an average temperature of 19°C (66°F), this humidity feels like a warm, balmy embrace that enhances the tropical atmosphere, making it a perfect backdrop for leisurely strolls and outdoor adventures, though it may also lead to a slightly sticky feeling as you explore.

September Average Humidity in Trevoes

This chart illustrates the average monthly humidity levels in Trevoes, 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 Trevoes is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%81%78%79%78%71%63%64%71%79%86%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Trevoes

In Trevoes 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 Trevoes.

Maximum UV Index Levels in Trevoes for September

The chart shows the monthly maximum UV Index (UVI) for Trevoes 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 Trevoes typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346910111098642
Data source: Trevoes 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 Trevoes Compares to Other Months

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

This table compares monthly weather conditions in Trevoes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)34 mm (1.3 inches)87%moderate
February Weather8°C (47°F)69 mm (2.7 inches)81%moderate
March Weather10°C (49°F)79 mm (3.1 inches)78%high
April Weather12°C (54°F)85 mm (3.4 inches)79%very high
May Weather16°C (61°F)34 mm (1.3 inches)78%very high
June Weather18°C (65°F)37 mm (1.5 inches)71%extreme
July Weather21°C (70°F)17 mm (0.7 inches)63%very high
August Weather21°C (70°F)14 mm (0.6 inches)64%very high
September Weather19°C (66°F)37 mm (1.5 inches)71%very high
October Weather15°C (59°F)59 mm (2.3 inches)79%high
November Weather9°C (49°F)72 mm (2.8 inches)86%moderate
December Weather7°C (45°F)85 mm (3.3 inches)87%low

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