Whistler (BC) Temperature by Month

The average annual maximum temperature in Whistler, British Columbia, Canada is 8°C (46°F), with daytime highs ranging from -3°C (27°F) in December to 19°C (66°F) in August. This page covers monthly averages, day-night differences, and how Whistler compares to cities worldwide.

The climate in Whistler is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 7°C (45°F) in August to -9°C (16°F) in December.

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 241 hours of sunshine.

The chart below shows the average temperature throughout the year:

Whistler's average annual maximum temperature is 8°C (46°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

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 Whistler, December is the coolest month, with average highs of -3°C (27°F) and humidity around 87%, 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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Whistler this rarely lasts long on the ground.

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