Squamish (BC) Temperature by Month

Squamish in British Columbia, Canada sees significant seasonal temperature differences, with daytime highs between 2°C (36°F) in December and 20°C (68°F) in August, averaging 10°C (50°F) annually. Explore the full monthly breakdown below.

The weather in Squamish experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 10°C (50°F) in August to -3°C (27°F) in December.

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

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. August, the city's warmest month, gets 277 hours of sunshine.

The chart below shows the average temperature throughout the year:

Squamish's average annual maximum temperature is 10°C (50°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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 Squamish, December is the coolest month, with average highs of 2°C (36°F) and humidity around 81%, considered very 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.

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 Squamish's weather, including monthly rainfall, sunshine hours, and humidity, visit our Squamish climate page.