Spilled coffee in a dream is not the omen of disaster it feels like while mopping. Dream traditions read spillage as release: something carefully held has been let go — by accident, by exhaustion, or by the psyche's quiet decision.
Who spilled it
If you spilled the coffee, the release is yours — a plan, a schedule, a grip on an outcome. If someone else spilled it, the reading points to others introducing change into your arrangements; if a stranger, the change is impersonal — weather, traffic, the world's ordinary friction.
Where it spilled
Coffee spilled on clothing touches identity and presentation (a small public embarrassment is being processed). Spilled on a table or floor concerns plans and foundations. Spilled toward another person is often read, kindly, as warmth escaping toward them — affection you hadn't meant to show.
The settled reading
Across traditions the summary is consistent: a spill is a small loss exchanged for information about what you were holding too tightly. It pairs naturally with the cup-reading figure of the wave — what moves through, rather than what breaks.