August Weather in Portneuf, Canada

Last updated: June 18, 2025

In Portneuf, Canada, the average temperature in August is a pleasant 19°C (66°F). However, temperatures can fluctuate, with minimums dipping to 6°C (43°F) and maximums soaring to 31°C (88°F). Expect around 120 mm (4.7 in) of precipitation over approximately 13 days, accompanied by a relatively high average humidity of 81%.

August Temperature in Portneuf

In August in Portneuf, the average temperature is 19°C (66°F). Maximums can reach 31°C (88°F), and minimums can be as low as 6°C (43°F). It's an ideal time to visit for those who enjoy mild weather and outdoor activities.

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

The chart illustrates August temperature patterns in Portneuf, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portneuf, August typically has an average temperature of 19°C (66°F), with highs reaching up to 31°C (88°F) and lows dropping to around 6°C (43°F).

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

August Precipitation in Portneuf

In Portneuf in August, the precipitation amount is 120 mm (4.7 in) spread over 13 days.

August Precipitation Trends in Portneuf

The chart displays monthly precipitation patterns in Portneuf, 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 Portneuf, August typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 13 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in Portneuf

In Portneuf in August, humidity is 81%. With an average temperature of 19°C (66°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel both muggy and slightly stifling, often leading to a need for frequent breaks in the shade.

August Average Humidity in Portneuf

This chart illustrates the average monthly humidity levels in Portneuf, 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 Portneuf is approximately 81%, 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 Portneuf

In Portneuf in August, 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 Portneuf.

Maximum UV Index Levels in Portneuf for August

The chart shows the monthly maximum UV Index (UVI) for Portneuf 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 Portneuf typically reaches 8, which falls under the very high exposure category.

Data source: Portneuf 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 Portneuf Compares to Other Months

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

This table compares monthly weather conditions in Portneuf, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-11°C (13°F)	87 mm (3.4 inches)	95%	low
February Weather	-9°C (16°F)	87 mm (3.4 inches)	93%	moderate
March Weather	-4°C (25°F)	97 mm (3.8 inches)	90%	moderate
April Weather	4°C (39°F)	117 mm (4.6 inches)	87%	high
May Weather	12°C (54°F)	107 mm (4.2 inches)	79%	very high
June Weather	17°C (63°F)	128 mm (5.1 inches)	73%	very high
July Weather	20°C (68°F)	126 mm (5.0 inches)	81%	very high
August Weather	19°C (66°F)	120 mm (4.7 inches)	81%	very high
September Weather	14°C (58°F)	109 mm (4.3 inches)	81%	high
October Weather	8°C (46°F)	139 mm (5.5 inches)	87%	moderate
November Weather	-1°C (31°F)	133 mm (5.2 inches)	89%	moderate
December Weather	-8°C (19°F)	107 mm (4.2 inches)	92%	low