nomadseason

September Weather in Baiao, Portugal

Last updated: August 27, 2025

In September, the average temperature in Baiao, Portugal is a pleasant 18°C (66°F). Expect a range from a cool minimum of 7°C (45°F) to a warm maximum of 32°C (91°F). During this month, anticipate 42 mm (1.7 in) of precipitation spread over 6 days, with an overall average humidity of 71%.

September Temperature in Baiao

In September in Baiao, the average temperature is 18°C (66°F). Maximum temperatures can reach 32°C (91°F), while minimums can drop to as low as 7°C (45°F). This makes it advisable for travelers to pack a mix of lightweight clothing for warmer days and layers for cooler evenings.

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

The chart illustrates September temperature patterns in Baiao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Baiao, September typically has an average temperature of 18°C (66°F), with highs reaching up to 32°C (91°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec434850546063686965585047
Data source: Temperature data for Baiao generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Baiao

In Baiao in September, the total precipitation amount is 42 mm (1.7 in) spread over 6 days.

September Precipitation Trends in Baiao

The chart displays monthly precipitation patterns in Baiao, 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 Baiao, September typically receives around 42 mm (1.7 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec891451501417555262042107148189
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Baiao

In Baiao in September, humidity is 71%. With an average temperature of 18°C (66°F), this humidity feels like walking through a warm mist, creating a comforting embrace that can make outdoor explorations delightful yet slightly sticky.

September Average Humidity in Baiao

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

In Baiao 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 Baiao.

Maximum UV Index Levels in Baiao for September

The chart shows the monthly maximum UV Index (UVI) for Baiao 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 Baiao typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34699111098642
Data source: Baiao 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 Baiao Compares to Other Months

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

This table compares monthly weather conditions in Baiao, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)89 mm (3.5 inches)87%moderate
February Weather9°C (48°F)145 mm (5.7 inches)81%moderate
March Weather10°C (50°F)150 mm (5.9 inches)78%high
April Weather12°C (54°F)141 mm (5.6 inches)79%very high
May Weather16°C (60°F)74 mm (2.9 inches)78%very high
June Weather17°C (64°F)55 mm (2.2 inches)71%extreme
July Weather20°C (69°F)26 mm (1.0 inches)63%very high
August Weather20°C (69°F)20 mm (0.8 inches)64%very high
September Weather18°C (66°F)42 mm (1.7 inches)71%very high
October Weather15°C (59°F)106 mm (4.2 inches)79%high
November Weather10°C (50°F)148 mm (5.8 inches)86%moderate
December Weather8°C (47°F)189 mm (7.4 inches)87%low

Compare Baiao's Climate with Cities Worldwide