The day his mother dies, Meursault notices that it is very hot on the bus that is taking him from Algiers to the retirement home where his mother lived; so hot that he falls asleep. Later, while waiting for the wake to begin, the harsh electric lights in the room make him extremely uncomfortable, so he gratefully accepts the coffee the caretaker offers him and smokes a cigarette. The same burning sun that so oppresses him during the funeral walk will once again blind the calm, reserved Meursault as he walks along a deserted beach a few days later--leading him to commit an irreparable act. Source: OpenLibrary