Q:
A: First of all, CN is the abbreviation for China. CA is the abbreviation for Canada. People do not wear sweaters in Vancouver in the summer much. For July and August the average temperature is 22C/71F, which most find to be perfect T-shirt weather. In the winter, sweaters are often warm enough, though not rain proof enough, since that is when the city gets the rain it is famous for. http://en.wikipedia.org/wiki/Climate_of_Vancouver