August Weather in Porto, Brazil

Last updated: August 22, 2025

In August, the average temperature in Porto, Brazil reaches a delightful 29°C (84°F). Expect a comfortable range, with minimums around 19°C (66°F) and maximums soaring up to 37°C (98°F). Don't worry about rain—there's only 3 mm (0.1 in) of precipitation over 0 days, and the average humidity sits at a brisk 42%. Perfect weather for adventures awaits!

August Temperature in Porto

In August in Porto, the average temperature is 29°C (84°F), with maximums reaching up to 37°C (98°F) and minimums dropping to as low as 19°C (66°F). This makes it an ideal time for travelers seeking warm weather and plenty of sunshine.

August Weather in Porto: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Porto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porto, August typically has an average temperature of 29°C (84°F), with highs reaching up to 37°C (98°F) and lows dropping to around 19°C (66°F).

Data source: Temperature data for Porto generated using information from the Copernicus Climate Change Service.

August Precipitation in Porto

In Porto in August, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

August Precipitation Trends in Porto

The chart displays monthly precipitation patterns in Porto, 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 Porto, August typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Porto

In Porto in August, humidity is 42%. With an average temperature of 29°C (84°F), this humidity feels like a warm embrace, creating an inviting atmosphere for travelers to explore, though it's essential to stay hydrated while enjoying outdoor adventures.

August Average Humidity in Porto

This chart illustrates the average monthly humidity levels in Porto, 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 Porto is approximately 42%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Porto

In Porto in August, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Porto.

Maximum UV Index Levels in Porto for August

The chart shows the monthly maximum UV Index (UVI) for Porto 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 Porto typically reaches 13, which falls under the extreme exposure category.

Data source: Porto 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 Porto Compares to Other Months

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

This table compares monthly weather conditions in Porto, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	28°C (82°F)	194 mm (7.6 inches)	90%	extreme
February Weather	27°C (81°F)	315 mm (12.4 inches)	91%	extreme
March Weather	27°C (80°F)	409 mm (16.1 inches)	92%	extreme
April Weather	27°C (81°F)	312 mm (12.3 inches)	93%	extreme
May Weather	27°C (81°F)	149 mm (5.9 inches)	88%	extreme
June Weather	28°C (82°F)	22 mm (0.9 inches)	75%	extreme
July Weather	28°C (82°F)	18 mm (0.7 inches)	52%	extreme
August Weather	29°C (84°F)	3 mm (0.1 inches)	42%	extreme
September Weather	30°C (86°F)	2 mm (0.1 inches)	36%	extreme
October Weather	30°C (87°F)	7 mm (0.3 inches)	35%	extreme
November Weather	30°C (86°F)	61 mm (2.4 inches)	43%	extreme
December Weather	29°C (85°F)	69 mm (2.7 inches)	76%	extreme