Mahanidhi Dasa: It is amazing that Srila Prabhupada had so much self-control that he rested for only fifteen minutes, despite being surrounded by a severely harsh environment. It was summer then, and summers in Vrindavan are so oppressively hot that many sadhus expire on the street. The temperature often remains above one hundred and fifteen degrees Fahrenheit for several days. Ironically enough, during the hottest part of the day, right after lunch, the electric power invariably cuts off, making a ceiling fan useless. Consequently, Srila Prabhupada had to endure great austerities while writing in his rooms and waiting for the mid day heat to abate. In the caressing coolness of evening, Srila Prabhupada would occasionally talk with friends while sitting on his veranda. In 1962, Srila Prabhupada spent a solitary summer working on Srimad-Bhagavatam.
Serving during the harsh summers
Reference: Prabhupada at Radha Damodara by Mahanidhi Dasa
courtesy:- https://www.srilaprabhupadalila.org/read/5420