July - September, yes, we have oppressive sunshine.

Spring/fall tend to be cloudy & rainy, and November to February-ish is referred to as "the big dark" - the days are short and the sun is low and obscured by clouds when it's above the horizon. Sounds like you'd get a lot done then (as do many people here).

Calgary, AB enters the chat: Calgary, Alberta, is considered the sunniest city in Canada, with an average of 333 sunny days and 2,396 hours of sunshine annually.