Whether your outdoor furniture can withstand a light drizzle depends heavily on its construction materials. For powder-coated aluminum, teak, and high-quality synthetic wicker, a brief, light rain shower is typically not a cause for immediate concern. These materials are designed to be weather-resistant and will not rust or warp from minimal water exposure. However, it is crucial to wipe them down once the rain stops to prevent water spots and to allow for proper air drying.
Furniture made from other materials requires much more immediate attention. Cast iron will begin to rust quickly if left wet, and untreated steel is highly susceptible to rust. Similarly, cushions with non-weather-resistant fabric will absorb moisture, leading to mold, mildew, and internal damage. For these pieces, covering them or bringing them under shelter immediately is the best practice.
Ultimately, the safest habit is to use fitted, breathable furniture covers. Even for weather-resistant pieces, a cover provides an extra layer of protection against not just rain, but also sun damage, pollen, and bird droppings, significantly extending the life and appearance of your outdoor investment.