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August Weather in Castelo Branco, Portugal

Last updated: August 27, 2025

In Castelo Branco, Portugal, the average temperature in August hovers around 22°C (73°F), with a comfortable range between 20°C (68°F) and 25°C (77°F). Expect 58 mm (2.3 in) of precipitation spread over 9 days, contributing to an average humidity level of 83%. Perfect for enjoying the serene beauty of the season!

August Temperature in Castelo Branco

In August in Castelo Branco, the average temperature is 22°C (73°F). The maximum can reach 25°C (77°F), while the minimum can dip to as low as 20°C (68°F). This makes it a pleasant time to visit, perfect for outdoor activities and exploring the local sights.

August Weather in Castelo Branco: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Castelo Branco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castelo Branco, August typically has an average temperature of 22°C (73°F), with highs reaching up to 25°C (77°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec615959606266707272696563
Data source: Temperature data for Castelo Branco 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.

August Precipitation in Castelo Branco

In Castelo Branco in August, the precipitation amount is 58 mm (2.3 in) spread over 9 days.

August Precipitation Trends in Castelo Branco

The chart displays monthly precipitation patterns in Castelo Branco, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Castelo Branco, August typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec91796375633827585774124108
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Castelo Branco

In Castelo Branco in August, humidity is 83%. With an average temperature of 22°C (73°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities feel a bit more exhausting, yet the lush surroundings create a vibrant atmosphere perfect for exploring.

August Average Humidity in Castelo Branco

This chart illustrates the average monthly humidity levels in Castelo Branco, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Castelo Branco is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%85%85%83%85%86%83%83%79%80%85%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Castelo Branco

In Castelo Branco in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Castelo Branco.

Maximum UV Index Levels in Castelo Branco for August

The chart shows the monthly maximum UV Index (UVI) for Castelo Branco in August, 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 August, the maximum UV index in Castelo Branco typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109743
Data source: Castelo Branco August 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 August Weather in Castelo Branco Compares to Other Months

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

This table compares monthly weather conditions in Castelo Branco, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)90 mm (3.6 inches)84%moderate
February Weather15°C (59°F)79 mm (3.1 inches)83%moderate
March Weather15°C (60°F)63 mm (2.5 inches)85%high
April Weather15°C (60°F)75 mm (3.0 inches)85%very high
May Weather17°C (62°F)63 mm (2.5 inches)83%very high
June Weather19°C (66°F)38 mm (1.5 inches)85%extreme
July Weather21°C (70°F)27 mm (1.1 inches)86%very high
August Weather22°C (73°F)58 mm (2.3 inches)83%very high
September Weather22°C (72°F)57 mm (2.2 inches)83%very high
October Weather20°C (69°F)74 mm (2.9 inches)79%high
November Weather18°C (65°F)124 mm (4.9 inches)80%moderate
December Weather17°C (63°F)108 mm (4.3 inches)85%moderate

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