August 1,2&3 Millrace Folk Festival Ontario's greatest Trad Folk Festival AND it's free.
Thw weekend after is Goderich Celtic Festival another good one but not free.
I will be at both, also the Celtic College the week between the two.
Also the Ontario Council of Folk Festivals has a more complete listing.
Free stuff, sometimes Folk related at Harbourfront in Toronto.
Not much in the lines of Folk Clubs during the summer.
Have a great time here in Canada.
I'm sure I will have a great time in the UK in July when I am over there with Orange Peel Morris
JohnB