The best time to visit Tarragona largely depends on your preferences. Summer (June to August) offers the warmest weather, perfect for beach lovers, but it's also the busiest and most expensive time. Expect higher prices for accommodation and dining during these months.
The shoulder seasons, spring (April to May) and autumn (September to October), provide a pleasant balance of good weather, fewer crowds, and more moderate prices. You can comfortably explore the historical sites and enjoy the coast without the intense summer heat or peak-season costs.
Winter (November to March) is the low season, offering the lowest prices and the most tranquil experience. While the weather is cooler, it's still ideal for sightseeing and enjoying a more authentic local feel, with fewer tourists and significant savings on travel and lodging.