Thanks for your replies. Yes, temperatures in the range 10-15 Celsius are not too cold, but still uncomfortable for long outdoor periods, specially if it is humid or windy (I vape when I work).
I have made quick vaping puffs in hotels that do not allow vaping indoors. Since the vapor disperses rapidly and leaves practically no trace odor, they cannot detect my vaping unless the rooms have very sensitive smoke detectors. Even in this case there is no detection unless you vape a huge cloud close to the detector, but I do not risk trying more than a quick puff away from the detector. In many hotels there are areas in the rooms (the bathroom) without detectors, so I can do a quick vape safely. I've tried this many times without problems, except in the UK where there is a marked obsession with smoke detectors, not because of smoking but of fires. Hotels and guest houses there tend to have sensitive detectors even inside bathrooms.
Do you know if hotels and B&B's in Halifax or in PEI have this UK smoke detector obsession?