Heatwaves come with health risks, especially for the elderly, babies & infants and people with health and mobility problems.
The most important thing is to stay hydrated – drink plenty of water, even if you don’t feel thirsty (and be aware that caffeine and alcohol dehydrates).
Dress light, both in fabric that breathes and colour – light colours reflect heat and sunlight.
Stay out of the sun if possible – if you can’t avoid it, wear a hat, shirt, sunglasses, sunscreen and take water with you.
Look after your pets – make sure they have plenty of shade and cool water – cats in particular can have organ shutdown if the get overheated.
Seek air-conditioning – if you don’t have it at home there are public libraries, galleries, museums, shopping malls, cafes and restaurants that are air-conditioned.
Be aware of heatwave symptoms (for yourself and family/friends) – symptoms include heavy sweating, headache, vomiting, swollen tongue, confusion. Again, keep drinking that water.
Check on neighbours, friends and family, especially if they are elderly or have respiratory problems or neurological issues (things like Parkinsons or Multiple Sclerosis).
And it should go without saying, but never leave children or animals in a parked car, even for a short time.
Of course, if you are visiting Adelaide, air-conditioned Rydges South Park with give a warm welcome and cool relief.