When the temperature outside is soaring, the best recommendation is to spend as much time as possible indoors, preferably in an air-conditioned environment. When and if the power goes out, turn on the inverter battery's fan to circulate the cooled air in the room.
Prevent outdoor heat from entering your home. Also, keep baking, cooking, and other activities to a minimum to avoid adding to the internal heat.
Also Read | 5 ways to have glowing skin during summers