Coquitlam (BC) Temperature by Month

Coquitlam in British Columbia, Canada sees significant seasonal temperature differences, with daytime highs between 6°C (43°F) in December and 23°C (73°F) in July, averaging 14°C (57°F) annually. Explore the full monthly breakdown below.

Visitors to Coquitlam can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 13°C (55°F) in July to 1°C (34°F) in December.

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 289 hours of sunshine.

The chart below shows the average temperature throughout the year:

Coquitlam's average annual maximum temperature is 14°C (57°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

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 Coquitlam, December is the coolest month, with average highs of 6°C (43°F) and humidity around 81%, considered very high. In July, the warmest month, temperatures average 23°C (73°F) with 61% humidity, conditions that feel high. 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.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

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