Outdoor sofas can absolutely be used in a weather-protected patio, provided they are designed to withstand outdoor conditions. A weather-protected patio, such as one with a roof or awning, offers some shelter from rain, wind, and direct sunlight, which helps extend the lifespan of outdoor furniture. However, even in such spaces, it's essential to choose sofas made from weather-resistant materials like teak, aluminum, or synthetic wicker, and cushions with UV-resistant, water-repellent fabrics.

For added durability, consider furniture with rust-proof frames and quick-drying foam cushions. While a covered patio reduces exposure to harsh elements, occasional moisture or humidity can still affect lesser-quality materials. To maximize longevity, occasional maintenance like cleaning and storing cushions during extreme weather is recommended.

Stylistically, outdoor sofas can transform a protected patio into a cozy, inviting extension of your living space. Opt for modular designs for flexibility or deep-seated options for lounging comfort. With the right choices, your weather-protected patio can become a year-round retreat.