People often want to hang a sign by the front door, on the porch, or out by the grill, and then ask whether it will survive out there. It is the right question, because not every material that looks good indoors holds up once the weather gets to it.
Metal is the one built for outside. Heavier laser-cut steel, finished matte and powder-coated, takes sun, rain, and humidity without losing its look. That is why address signs, farm and beach house signs, and outdoor name plaques are made from it. It is the safe choice for anything that lives past the threshold.
Ceramic handles the outdoors well too, especially for an address plaque. It keeps its color in the sun and shrugs off rain, which is exactly what you want on a piece that has one job and does it for years by the door.
Wood is where people get into trouble. A solid wood sign is beautiful indoors or under a covered porch, but full sun and rain will wear it down over time. If you love a wood sign for an outdoor spot, keep it somewhere covered, or treat it as a seasonal piece rather than a permanent fixture.
Canvas, glass, and acrylic are indoor pieces, full stop. They are made for detail and warmth on an interior wall, not for weather. If the spot you have in mind sees sun or rain, point yourself at metal or ceramic from the start, and the sign will still look right years from now.