Stella Maris Beach, Umag: The Blue Flag Lagoon at the Foot of Croatia’s Oldest ATP Tennis Stadium

Croatia | Umag | Northwestern Istria

The Goran Ivanišević ATP Stadium in Umag has been the venue for the ATP Plava Laguna Croatia Open tennis tournament every summer since 1990 — the oldest and most prestigious tennis tournament in Croatia, which also hosts concerts by international artists and the Sea Star festival that draws thousands of young people every spring. The stadium sits at the foot of the Laguna Stella Maris Beach — not adjacent to it as an incidental neighbour but directly above it, so that the relationship between the international tennis court and the family pebble beach below is the specific combination that defines what Stella Maris Resort is. A beach that has hosted Goran Ivanišević, Novak Djokovic, Rafael Nadal, and every other major clay-court player who has competed in Umag for 35 years looks down at the same water where children are playing on a floating inflatable island.

Laguna Stella Maris Beach is at Stella Maris Resort, 3 kilometres from Umag town centre. A Blue Flag has flown above the beach for years. The beach is surrounded by pine trees and the lagoon is separated from the rest of the coast by a bridge. The beach measures 225 to 327 metres in length and 18 to 25 metres in width — a pebble beach with concrete sunbathing platforms, family infrastructure, and the calm lagoon water that the bridge separation from the open sea maintains.

Getting There: Tourist Train from Umag Centre, by Bicycle on the Promenade, or by Car

From Umag town centre, the Stella Maris resort and beach are 3 kilometres north along the coast — accessible by the tourist train that runs during the summer season and stops directly at the resort, by bicycle on the seaside promenade (approximately 10 minutes), or by car with parking available near the resort entrance. The tourist train is the specific transport provision that the resort consistently emphasises as the family-friendly arrival mode — a ride that visitor accounts describe as entertaining for children in itself rather than merely functional.

The Park and Ride bike rental service operates from Umag town and at several points along the coastal route, allowing the promenade cycle as an alternative to both the train and the car. The promenade between Umag old town and the resort is the specific walk or cycle that the Colours of Istria beach guide describes as the route that ends at the bridge across the lagoon — the arrival moment where the beach becomes visible.

The resort is also accessible directly from the A9 motorway exit for Umag, making it reachable from the motorway for visitors arriving from Ljubljana, Trieste, or Zagreb without needing to enter Umag town first.

The Lagoon: Bridge, Pebble, Shallow Entry, and the Inflatable Island

The defining physical feature of Stella Maris Beach is the lagoon geometry. A bridge separates the mouth of the lagoon from the open sea. An inflatable island with slides and jumping pillows floats in the middle. Lifeguards and first aid staff monitor the beach throughout the day. The water is shallow, and the beach is covered mostly in pebbles with a few paved platforms for sunbathing. The water is clear, and a Blue Flag confirms the water quality standard.

The bridge is the specific feature that makes the lagoon a protected swimming environment — the barrier that keeps the enclosed water calm when the Maestral wind creates chop on the open coast to the north. The enclosed, shallow, calm lagoon water is the quality that makes Stella Maris Beach the pre-eminent family beach in the Umag area for families with very young children, who need the extended shallow wading zone that the lagoon geometry provides and that the open coast beaches of Istria characteristically lack.

The inflatable floating island in the centre of the lagoon is the children’s focal point — the slides, jumping pillows, and climbing structures anchored in the middle of the swimming zone that make the beach’s aerial photographs distinctively recognisable within the Istrian beach offer. The pirate ship water playground with sprinklers within the resort provides the land-based children’s activity complement.

The Goran Ivanišević ATP Stadium and the Tennis Academy

The stadium above the beach was renamed the Goran Ivanišević ATP Stadium to honour the Umag-born player who became the most decorated Croatian tennis player in history — eight Grand Slam doubles titles, the Wimbledon singles title in 2001 as a wildcard entry, and a career that the Umag tournament has celebrated as the hometown player above all others. The renaming is an accurate reflection of the relationship between the tournament, the town, and the player — all three have overlapping identities for the Croatian tennis world.

The Umag Tennis Academy adjacent to the resort has 26 courts — 25 clay and 1 hard — making it the largest concentration of clay courts in Croatia and one of the significant clay court training centres in the region. During the ATP tournament week in July, the courts around the stadium are simultaneously training courts for the tour players and accessible courts for resort guests — the specific situation where an amateur can be rallying on an adjacent court to a Top 100 ATP player.

The Resort: Plava Laguna, Four Pools, the Marina, and Sea Star Festival

Stella Maris Resort is operated by Plava Laguna — the Istrian resort group that manages multiple properties along the northwestern Istrian coast, including the Katoro, Kanegra, and Pinia beach areas in the Umag zone. The resort includes hotels, apartments, a camping site, four pools (adult, children, baby, and an aqua park), a marina, a diving centre, and the full water sports provision. The Sea Star festival — a spring electronic music festival that uses the ATP stadium as one of its stages — brings thousands of attendees to the Stella Maris site in May before the summer beach season begins.

The resort’s camping site (Camping Stella Maris, 463 pitches, 4-star) is the accommodation option that combines the resort facilities with the price point of a campsite — a combination that makes the Stella Maris site accessible to visitors who want the ATP stadium proximity, the beach quality, and the full resort infrastructure at the camping accommodation cost.

Stella Maris in the Umag Beach Context

The Umag area beach offer under the Plava Laguna umbrella covers several distinct beaches: Laguna Stella Maris (this article — the ATP stadium beach, Blue Flag, lagoon, 3km north of town), Katoro Beach (another Blue Flag beach further north, near the Katoro resort and the volleyball tournament venue), and the Punta sandy beach at the Punta Resort at the southern edge of Umag town — the article covered separately in this series as Umag Sandy Beach.

The distinction between Stella Maris and the Punta sandy beach captures the two ends of the Umag family beach offer: the resort beach with sports infrastructure and the lagoon at one end, and the simple sandy town beach at the other.

Stella Maris Beach in Umag is the Blue Flag pebble lagoon at the base of the Goran Ivanišević ATP Stadium — 3 kilometres from town by tourist train or bike, a bridge separating the calm lagoon from the open sea, a floating inflatable island in the centre, and 35 years of Croatia’s biggest tennis tournament happening directly above the beach every July.

Take the tourist train from Umag. Get off at the resort stop.

The tennis may or may not be on. The lagoon will be calm regardless.