How to stay cool while walking or jogging in the summer?
When out walking or jogging, take a spritzer bottle filled with water and peppermint oil. Wear a personal cooling fan around the neck. Wear loose clothing that allows air flow. Stay hydrated and do not over exert yourself which can lead to heat exhaustion.
In Australia you will not be getting heat exhaustion in July since it will be freezing cold outside. Your water bottle would freeze anyway. Take a hot thermos of something to keep you warm or just stay inside where the fires are burning nice and toasty.