多热的天啊 can be translated as "what a hot day" in Engpsh.
来源：这是一个通俗的表达方式，表示对天气的不满。
Examples in Engpsh with Chinese translation:
"What a hot day it is!" (多热的天啊!)
"This heat is unbearable." (这热得难以忍受。)
"I can't wait for the temperature to cool down." (我等不及天气降温了。)