Yes, ‘You Are My Sunshine’ is a metaphor. In this phrase, the speaker compares the joy and warmth that a loved one brings to their life with the brightness and happiness associated with sunshine. Instead of saying that the person literally provides sunlight, the metaphor suggests that the person’s presence uplifts and lightens the speaker’s mood, much like how the sun brightens a day.
This kind of figurative language is common in poetry and songs, allowing deeper emotional connections to be conveyed through imagery and symbolism. The use of ‘sunshine’ in this context evokes feelings of love, comfort, and essential support, highlighting how important that person is to the speaker’s happiness.