FX, the various schools do run REgular Force SQ and MOC training at all times of the year. Depending on the trade and particular school's schedule, you could find yourself with a winter indoctrination course added as part of the introductory field training so you can survive the elements.
As you can see, we have a bit of problem in that people answer a question quickly from their own experience, without pondering for a second if the question is in reference to Reserve or Regular Force training. To be fair, many people asking those questions do not know enough yet to add that detail, and because they are only sonsidering one Component themselves. For your future inquiries, it will reduce some of the noise if you specify your requirement for answers based on Regular Force training.
Reserve Force training course are normelly run on weekends through the year Sept to May, or in full time schedules (Mon - Fri) during summer training.
Regular Force courses are run full-time throughout the year, though some training establishments run very few Regular Force courses in the summer months because their staff and resources are committed to supporting Reserve training while those soldiers are available.