Consecutive warm nights for 14 days at a stretch with minimum night temperature above 20 degrees has set a new record in Perth.
Day temperatures have also crossed 30 degrees for 21 consecutive days.
It is important to consume more fluids and take adequate rest to avoid heat exhaustion.
Andy Robertson from the Health Department said, "Heat exhaustion is when people have a higher than normal body temperature, they are feeling generally unwell, they are nauseous, feeling faint and often that can be dealt with fairly easily by resting and getting lots of fluids. If people have elderly relatives or neighbors, keep an eye on them because this is the time when the older or sick or frail may not be coping well and this is the time they may need someone to help them out."