August Weather in Valongo, Portugal

Last updated: August 27, 2025

In August, the average temperature in Valongo, Portugal is 21°C (70°F), making it a pleasant time to visit. Expect temperatures to range from a comfortable minimum of 12°C (54°F) to a warm maximum of 36°C (98°F). With an average humidity level of 64%, the air feels just right. However, be prepared for a sprinkle of rain, as the region sees about 19 mm (0.7 in) of precipitation over the course of 4 days.

August Temperature in Valongo

In August, in Valongo, the average temperature is 21°C (70°F). Maximum can reach 36°C (98°F) and minimum can be as low as 12°C (54°F). It's a great time for travelers to enjoy pleasant weather while exploring the area.

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

The chart illustrates August temperature patterns in Valongo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Valongo, August typically has an average temperature of 21°C (70°F), with highs reaching up to 36°C (98°F) and lows dropping to around 12°C (54°F).

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

August Precipitation in Valongo

In Valongo in August, the precipitation amount is 19 mm (0.7 in) over the course of 4 days.

August Precipitation Trends in Valongo

The chart displays monthly precipitation patterns in Valongo, 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 Valongo, August typically receives around 19 mm (0.7 inches) of precipitation spread over approximately 4 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 Valongo

In Valongo in August humidity is 64%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making it comfortable for traveling during the day, albeit slightly sticky in the afternoons.

August Average Humidity in Valongo

This chart illustrates the average monthly humidity levels in Valongo, 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 Valongo is approximately 64%, 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 Valongo

In Valongo in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Valongo.

Maximum UV Index Levels in Valongo for August

The chart shows the monthly maximum UV Index (UVI) for Valongo 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 Valongo typically reaches 9, which falls under the very high exposure category.

Data source: Valongo 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 Valongo Compares to Other Months

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

This table compares monthly weather conditions in Valongo, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	91 mm (3.6 inches)	87%	low
February Weather	11°C (52°F)	138 mm (5.4 inches)	81%	moderate
March Weather	12°C (54°F)	141 mm (5.6 inches)	78%	high
April Weather	14°C (58°F)	146 mm (5.7 inches)	79%	very high
May Weather	17°C (63°F)	81 mm (3.2 inches)	78%	very high
June Weather	18°C (66°F)	50 mm (2.0 inches)	71%	extreme
July Weather	21°C (70°F)	23 mm (0.9 inches)	63%	very high
August Weather	21°C (70°F)	19 mm (0.7 inches)	64%	very high
September Weather	20°C (68°F)	39 mm (1.5 inches)	71%	very high
October Weather	17°C (62°F)	121 mm (4.8 inches)	79%	high
November Weather	13°C (55°F)	156 mm (6.1 inches)	86%	moderate
December Weather	11°C (52°F)	187 mm (7.4 inches)	87%	low