Vancouver’s climate is warm and temperate with average temperature of 9.9 °C and annual rainfall 1283 mm, while Whistler, Calgary and Banff have a cold and temperate climate. Whistler’s average temperature is 5.9 °C and rainfall 1113 mm, while Calgary’s temperature is 3.4 °C and rainfall 428 mm, and Banff’s temperature is 1.8 °C and rainfall 511 mm.
The seasons in Vancouver are as follow:
- Spring –March to May are months when temperatures are mild with a mix of sunshine and rain.
- Summer –June to August is the peak tourist season, with July being the hottest month of the year.
- Autumn –September to November is a period of cool temperatures with pretty fall foliage. Early autumn may still be warm, but it can get rather cold by the end of autumn. It is recommended to pack more layers.
- Winter –December to February is when Vancouver has frequent rain showers which may hinder sightseeing plans. Do pack more layers and a winter jacket. January is the coldest month of the year.
The seasons in Whistler, Calgary and Banff are as follow:
- Spring –April to May are months when melting snow will muddy parks and trails in Calgary and Banff. Banff’s weather is unpredictable and everything from blizzards to warm weather can be experienced during this season. Skiing can be done through the end of April at Whistler.
- Summer –June to August is the peak tourist season, with July being the hottest month of the year. The mountain lakes at Banff look their most brilliant during this period. Skiing can still be done at Whistler’s Horstman Glacier.
- Autumn –September to October is when temperatures cool and beautiful fall colours arrive. Do pack warm layers to protect you from the cooling weather. Blizzards are not uncommon in Banff in October as it can quickly turn bitterly cold within the month.
- Winter –November to March are months when snow blankets the cities and towns, and winter sports enthusiasts descend upon them in search of powder. Do pack more layers and a winter jacket. January is the coldest month of the year.