Cagliari in September

May through October gives you the best weather, but each month feels different. May and June offer mild temperatures around 24°C and fewer crowds. The sea warms up enough for swimming, and restaurant terraces reopen after winter. July and August bring heat and tourists. Temperatures hit 30°C regularly, and Poetto beach fills with Italian families on vacation. Hotels cost more, but the city buzzes with outdoor concerts and late-night dining. September and October might be ideal. The sea stays warm from summer heating, crowds thin out, and temperatures settle around 26°C. Restaurants offer seasonal menus featuring local harvests. Winter isn't beach weather, but it's not unpleasant either. Temperatures hover around 15°C, museums stay open, and you'll have the city mostly to yourself. Many beach restaurants close, but the historic center maintains its rhythm.