Temperatures could reach 40 degrees Celsius in the western regions of the province and the KZN Midlands.
Garrith Jamieson, a spokesman for ALS Paramedics, is advising locals to restrain their outdoor activities, dress casually, and refrain from engaging in strenuous physical activity.
Additionally, SAWS issues heatwave warnings over some areas of KZN.
He advises residents to watch out for health risks like heat exhaustion, dehydration, hyperthermia, and heat stroke.
Confusion, loss of consciousness, dry skin, potential seizures, and obviously high body temperatures are typical symptoms of heat exhaustion or heat stroke. Treatment for these needs to be started right away because it could be fatal if it is not.