The ideal window to visit Spain's Costa Brava is between May and September, when the Mediterranean climate offers the most reliable weather for coastal exploration. July and August are the peak summer months, characterized by hot, dry days with temperatures ranging from 25°C to 30°C, making them perfect for beach lovers but also the most crowded and expensive time to travel. For those seeking a balance of warm weather and fewer tourists, the "shoulder" months of June and September are highly recommended; during these times, the sea remains warm enough for swimming (21°C–24°C), but the coastal towns like Cadaqués and Tossa de Mar are much more peaceful. May and October are also excellent for active travelers interested in hiking the Camí de Ronda coastal paths, as the air is cooler and the landscape is lush. While winter remains mild, many seasonal restaurants and attractions in smaller seaside villages close between November and March, so sticking to the late spring through early autumn ensures the full Costa Brava experience.