Wood coffee tables are generally not suited for outdoor use unless specially treated. Outdoor elements like sun, rain, and temperature changes can damage untreated wood, causing it to warp, crack, or fade. If you want to use a wood coffee table outdoors, choose weather-resistant woods like teak or cedar, which naturally resist moisture and insects. Applying outdoor-grade varnish or sealant also helps prolong its life. Regular maintenance is crucial; even outdoor-friendly woods need occasional refinishing to withstand the elements and retain their beauty.