Winter has always been the worse time of the year to travel to Mtl. There are many reasons for this, and i will only name a few:
1) coldest weather of the year in Mtl; because of this, people who tend to live in warmer climates find Mtl's weather unbearable.
2) winter in Mtl, as compared to summer, can be very depressing; it's like night and day, in terms of its attractions and lifestyle.
3) people who hate hockey won't enjoy Mtl during the winter as much as during the summer, since during the winter months, it's hockey, hockey, hockey; you'd think hockey is a religion....actually, in its own way, it is!
4) unreliable weather conditions; you never know when you'll get caught in a snow storm if you're driving, or if you'll get your flight cancelled due to bad weather. Several years ago, my outgoing flight got delayed for 2 days.....now that i think of it, that wasn't so bad after all!
5) Most of the better festivals are held during the summer months, including the F1 Grand Prix.
6) Finally, the sightseeing which involves appreciating the parade of scantilly-clad beauties walking along the street, whether it'd be on Crescent, St-Laurent, Ste-Catherine or Old Mtl, is one of our favorite pastimes during the warmer months.