Portneuf (QC) Temperature by Month

The average annual maximum temperature in Portneuf, Quebec, Canada is 11°C (52°F), with daytime highs ranging from -6°C (21°F) in January to 26°C (79°F) in July. This page covers monthly averages, day-night differences, and how Portneuf compares to cities worldwide.

The weather in Portneuf experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 15°C (59°F) in July to -16°C (3°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Portneuf by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. July, the city's warmest month, gets 253 hours of sunshine.

The chart below shows the average temperature throughout the year:

Portneuf's average annual maximum temperature is 11°C (52°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.

In Portneuf, January is the coolest month, with average highs of -6°C (21°F) and humidity around 67%, considered high. In July, the warmest month, temperatures average 26°C (79°F) with 57% humidity, conditions that feel moderate. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Portneuf's weather, including monthly rainfall, sunshine hours, and humidity, visit our Portneuf climate page.