It is chilly in Canada, so I really only have 6 to 8 weeks a year when I can wear them without goosebumps & hard nipples
Chilly in Canada? Psh, Oct through April, going from memory.
April, the month of snow/sleet/rain. May, the month where it changes from jacket weather to t-shirt weather, inside of 2 weeks. June, SERIOUS mosquitos. July-Aug, toasty, mandatory A/C weather much of the time. Sept, back-to-school overcast skies. Oct, anything from pleasant to a freak snowstorm (and one Halloween was miserably cold rain).
So yeah I guess only a couple months of predictably hot weather. Point being, it's not necessarily limited to that.
Also, there are plenty of indoor swimming pools.
And before I forget: Nice bikini top!