Whether your urban outdoor furniture can be left outside in the rain depends primarily on the materials and construction quality. Most modern outdoor furniture is designed to withstand typical weather conditions, including rain, but proper care extends its lifespan significantly.
Powder-coated aluminum, teak, all-weather wicker, and stainless steel generally handle rain exposure well. These materials are naturally resistant to rust and moisture damage. However, even weather-resistant furniture benefits from occasional covering during heavy rainfall or extreme weather conditions.
For optimal protection, consider using breathable furniture covers that prevent moisture accumulation while shielding from direct rain exposure. Regular maintenance like cleaning drainage channels and applying protective sealants (for wood furniture) greatly enhances weather resistance.
Ultimately, while quality outdoor furniture can handle rain, covering it during prolonged wet seasons or storms will significantly prolong its appearance and structural integrity. Always check manufacturer guidelines for specific care instructions regarding your particular furniture set.