For a 48-inch (1.2 m) round table, choose an umbrella that’s about 8 to 9 feet (2.4 to 2.7 m) in diameter.
For larger dining sets, a 9 to 11-foot (2.7 to 3.3 m) umbrella is typical.
Always ensure your umbrella pole fits your table’s umbrella hole and that your base is heavy enough to keep it stable in windy conditions.
If your patio is in a particularly windy area, you might want to choose a wind-resistant design with sturdy ribs and vented canopies that allow air to pass through. This reduces the risk of tipping over or damage.