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September Weather in Sequeira, Portugal

Last updated: August 27, 2025

In Sequeira, Portugal, the average temperature in September is a comfortable 19°C (67°F). You can expect a range with minimums dipping to 7°C (44°F) and highs soaring to 33°C (92°F). Throughout the month, precipitation amounts reach 40 mm (1.6 in) over about 4 days, contributing to an average humidity level of 63%.

September Temperature in Sequeira

In September in Sequeira, the average temperature is 19°C (67°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop to a chilly 7°C (44°F). Be sure to pack layers to comfortably enjoy your time exploring the diverse weather conditions!

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

The chart illustrates September temperature patterns in Sequeira, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sequeira, September typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec414648536166727266584845
Data source: Temperature data for Sequeira 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 Sequeira

In Sequeira in September, the precipitation amount is 40 mm (1.6 in) spread over a duration of 4 days.

September Precipitation Trends in Sequeira

The chart displays monthly precipitation patterns in Sequeira, 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 Sequeira, September typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec386787884028121040669285
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sequeira

In Sequeira in September, humidity is 63%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace that adds a touch of heaviness to the air, making it slightly uncomfortable for traveling but still manageable with light clothing and plenty of hydration.

September Average Humidity in Sequeira

This chart illustrates the average monthly humidity levels in Sequeira, 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 Sequeira is approximately 63%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%85%79%77%76%64%54%52%63%78%90%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sequeira

In Sequeira 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 Sequeira.

Maximum UV Index Levels in Sequeira for September

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

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

This table compares monthly weather conditions in Sequeira, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)38 mm (1.5 inches)91%moderate
February Weather8°C (47°F)67 mm (2.7 inches)85%moderate
March Weather9°C (49°F)87 mm (3.4 inches)79%high
April Weather12°C (53°F)88 mm (3.5 inches)77%very high
May Weather16°C (61°F)40 mm (1.6 inches)76%very high
June Weather19°C (66°F)28 mm (1.1 inches)64%extreme
July Weather22°C (72°F)11 mm (0.5 inches)54%very high
August Weather22°C (72°F)10 mm (0.4 inches)52%very high
September Weather19°C (67°F)40 mm (1.6 inches)63%very high
October Weather15°C (59°F)66 mm (2.6 inches)78%high
November Weather9°C (49°F)92 mm (3.6 inches)90%moderate
December Weather7°C (45°F)85 mm (3.3 inches)91%low

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