The story is set at a beach, I think it was a tribe. The main character's mother gets sick and nothing can warm her up anymore, so the protagonist decides to sail and bring the sun back to her. This is a short story I read about 6-7 years ago, I'm pretty sure it's a 20th century novel.
**ENDING SPOILER** The man ends up forgetting about his mother and falls in love with the sun.
**ENDING SPOILER**
The man ends up forgetting about his mother and falls in love with the sun.