In The Stranger, the sun and weather is a common occurrence in Camus’ writing. In the context of Maman’s funeral, “The sun was beginning to bear down on the earth and it was getting hotter by the minute… I was surprised at how fast the sun was climbing in the sky… The glare from the sky was unbearable,” (15, 16). Usually, the sun is used with a positive connotation, representing happiness, a bright future, etc. The uncommon use of a negative connotation for the sun in the second chapter correlates with the funeral occurring.
The climax of Part One of The Stranger occurs when Mersault is on the beach. And guess what? The sun is brought up again, “By now the sun was overpowering. It shattered into little pieces on the sand and water,” (55). The sun seems to be brought up in Mersault’s internal monologue when something bad is about to happen. It’s introduced at Maman’s funeral, and then mentioned again as the breaking point before Mersault shoots the Arab man at the beach.
From both contexts, I think the sun acts as a perpetrator to the negative occurrences and sets off Mersault in spiraling mood swings and thought processes.