Traditional Indian architecture has separation between outer zone and inner zones with different walls and roofs. Basically outer walls and attic roofs can heat

Traditional Indian architecture has separation between outer zone and inner zones with different walls and roofs. Basically outer walls and attic roofs can heat up (and cool down with airflow) while inner walls and roofs will remain cooler. Also, the traditional clay-brick walls are much thicker than today's concrete blocks. Those clay bricks have much higher heat capacity.