+0
Which of the two is better? Thank you.

During the summer, air-conditioning is not necessary because the walls are 50 centimeters thick and they guarantee coolness/moderate temperature even during the scorching heat.
+0
AntonijaWhich of the two is better? Thank you.

During the summer, air-conditioning is not necessary because the walls are 50 centimeters thick and they guarantee coolness/moderate temperature even during the scorching heat.
I would go with "comfortable temperature".
Comments  
Thank you Philip.