Out here in Atlantic Canada (ie. 3 provinces in Canada in 1800s called The Maritimes)plus Newfoundland and Labrador who joined Canada in 1949, seasons are as follows:
Spring is slow to come
Summer is pleasant in that temps seldom get to 90'F or 35'C
Fall is prolonged, cool at night often very lovely in daytime. Many a year serious frosty nights don't happen until late October. But some really great sites to visit lose their extra summer staff about September 1.
So, what do you like to do? Hike, swim, boat in coastal waters. Sweat not the small stuff. But if you need a lifesaver to patrol your beach, no go after Labour Day.
Hit the historic sites and convenient hours, come before September. Examples Louisbourg Fortress is a major reconstruction. Staff in period dress on Cape Breton. Or Orwell Corner a historic village in PEI with adjoining historical museum. Again before Sept 1. Neighboring Sir Andrew Macphail estate likewise
Get local delectable eats at .seasonal picking times. Easy as pie for Farmer's Markets at Saint John, NB, Charlottetown, PEI, Cardigan, PEI, Farmer's Daughter at Whycocomagh, Cape Breton.
Call, tourism guides: online search: name of province & tourism. Ask about your special interests
& There are things called Fall Flavours.
In June there is Festival of Small Halls for two weeks in June with some sites booked first ticket night, or Stan Fest June 30 - July 2. etc.....
Remember take the ferry to PEI and the Bridge off. You pay only for the leaving crossing and the bridge costs less than the ferry.
Does that help?
:B
Left out the winter season. More in some provinces (Newfoundland and Labrador) than others. There's a skiers trying for a Believe it or Not entry this weekend, besides other skiing. & Other provinces and Alaska have sled dog races. ie.
http://www.yukonquest.com/ is on this week for 9 - 10+ days....