Poreč is a town and municipality on the western coast of the Istrian peninsula, in Istria County, Croatia. Its major landmark is the 6th-century Euphrasian Basilica, which in 1997 was designated a UNESCO World Heritage Site.
The town of Poreč/Parenzo is almost 2,000 years old, and is set around a harbour protected from the sea by the small island of Sveti Nikola/San Nicola (Saint Nicholas). The town's population of approximately 12,000 resides mostly on the outskirts, while the wider Poreč/Parenzo area has a population of approximately 17,000 inhabitants. The municipal area covers 142 square kilometres (55 sq mi), with the 37 kilometres (23 miles) long shoreline stretching from the Mirna River near Novigrad/Cittanova to Funtana and Vrsar/Orsera in the south. Ever since the 1970s, the coast of Poreč/Parenzo and neighboring Rovinj has been the most visited tourist destination in Croatia.
Situated on the western coast of Istria and cooled by sea breezes, the local climate is relatively mild and free of oppressive summer heat. The month of July is the hottest, with a maximum air temperature of 30°C in conditions of low humidity, while January is the coldest with an average of 6 °C (43 °F). There are more than 2,400 hours of sun a year, an average of more than 10 hours of sunshine during the summer days. Sea temperatures can reach 28 °C (82 °F), higher than one might expect compared to the coast of southern Croatia where the air temperatures are higher. The average annual rainfall of 920 mm (36.2 in) is more or less equally distributed throughout the year, although July and August are very dry. Winds here are Bora, bringing the cold, clear weather from the north in the winter, and the Sirocco warm Mediterranean wind from the south bringing rain. The summer breeze that blows from the sea to the land is called the Maestral.
In 1844, the Austrian Lloyd steamship company opened a tourist line which called at Parenzo. The first tourist guide describing and depicting the town was printed as early as 1845. The oldest hotel is the Riviera, constructed in 1910. Later came the Parentino and others.
Today, tourist infrastructure is intentionally dispersed along the 37 km (23 mi) long coastline, between the Mirna River and the deep Lim valley. The south hosts self-contained centres like Plava Laguna (Blue Lagoon), Zelena Laguna (Green Lagoon), Bijela Uvala (White Cove) and Brulo. To the north, mirroring centres are Materada, Červar Porat, Ulika and Lanterna. In the high season, the area's temporary population can exceed 120,000.
Poreč/Parenzo's heritage can be seen in the historic town centre, in museums and galleries hosted in houses and palaces, many of them still private homes as they have been for centuries. In the off season, weekend visitors from Croatia, Slovenia, Austria and Italy visit the area. Sports complexes are developed and used year-round.