When should I book a summer rental in Niagara?

Book your summer Niagara rental in January, three to six months out for July and August — lean toward six months if you want your pick of the good ones. Niagara Falls draws families from two countries, so both sides fill up fast once school lets out. Booking early gets you the 3-bedroom house with a fenced yard and short walk to the park; waiting until June means fighting over leftovers at a premium.