Dammit. Just when I was about to buy some for the trip, it jumped up - in Canadian $ - from 0.0820 to 0.0835. Has been going up for the last two weeks.
Doesn't look look like $CAD declined "some more" - it's remained unchanged relatively to $US for a couple of months. Peso dropped in $CAD from 0.086 to 0.082 earlier this summer, as it did against $US as well, but last 2 weeks peso is rising against $CAD.