When it comes to outdoor relaxation, the depth of your sofa seating plays a crucial role in comfort and usability. The ideal depth for a comfortable outdoor sofa typically ranges between 20 to 24 inches (50 to 60 cm). This measurement ensures adequate support for your back while allowing enough space to sit or lounge without feeling cramped.

Deeper seating (around 24 inches or more) is perfect for lounging and reclining, making it ideal for casual outdoor spaces where relaxation is a priority. However, if the sofa is too deep (beyond 26 inches), it may become uncomfortable for shorter individuals or those who prefer an upright posture for dining or socializing.

For a balanced design, consider 22 inches (55 cm) as a versatile depth that accommodates both sitting and light lounging. Pair this with high-quality cushions and ergonomic back support to maximize comfort. Additionally, the seat height (usually 17–19 inches) and armrest positioning should complement the depth for optimal usability.

Ultimately, the best depth depends on your intended use—whether for lively gatherings, quiet relaxation, or a mix of both. Test different depths before purchasing to ensure your outdoor sofa meets your comfort needs while enhancing your patio or garden aesthetic.