What does it mean to dream about rainbow?
A rainbow often points to hope, promise, or a bridge between states, a bright sign appearing after the storm.
Four ways to read it
Each reading below comes from a named tradition and a cited source, so you can see where it came from and decide what fits your dream.
Freud
Freud would read a rainbow within the dream's scene, a striking image that might gather hope, wholeness, or the wish for something promised. He would ask what it followed and how you felt seeing it. The image takes meaning from what surrounds it.
After Freud, The Interpretation of Dreams (Brill trans., 1913), public domain.Jung
Jung might see a rainbow as an image of wholeness, all the colours joined in one arc, and as a bridge between earth and sky, the human and the divine. It often reads as hope, reconciliation, or a turning point. Its appearing after darkness is part of its force.
Jungian concept (our summary).Modern
Under the continuity view, a rainbow often follows from waking hope, relief after hardship, or a sense of promise. It may also simply echo a rainbow, or a colourful image, from your day. Your own feeling toward it is the best guide.
Continuity hypothesis (our summary).Mythological
The rainbow was widely read as a bridge or path between the human world and the divine, the road of messenger gods and the sign of a covenant after the flood. It promised renewal once the storm had passed. Across cultures it joined the earth to the heavens.
Rosmerta Publishing editorial synthesis (after Bulfinch; Frazer).