Piscina Oceânica do Tamariz

The Piscina Oceânica do Tamariz is a seawater pool built into the rocks at the eastern end of Praia do Tamariz, Estoril’s best-known beach. Cascais council lists it among the municipality’s outdoor pools and describes it as an ocean pool with free access. You don’t need a ticket or a membership card: you walk down from the promenade and get in.

Praia do Tamariz faces the gardens of the Casino Estoril, and the train station is right behind it, so this is one of the easiest seaside swims to reach from Lisbon without a car. The beach is 190 metres long and, according to the council, is popular with families, schools and holiday camps.

This is a simple structure of stone and concrete on the shoreline, not a leisure complex. There are no slides, no heated water and no separate paddling pool listed. What it gives children is enclosed seawater without breaking waves, right next to a sandy beach.

The pool is filled by the sea, so the water level and freshness change with the tide. The council’s page doesn’t give its depth or dimensions. Walk round the edge first and check the depth yourself before a small child goes in, and don’t let non-swimmers in without armbands and an adult beside them. The rocks around ocean pools are often slippery with seaweed, so water shoes help.

The pool is a summer place. Cascais council’s 2026 bathing season ran from 1 May to 30 September, and Time Out Lisboa’s 2026 guide to cheap pools gave the pool the same dates. The beach next to it is lifeguarded and flagged during the official bathing season and has a first-aid post, according to Cascais Ambiente, the council’s environment company. Outside the bathing season there are no lifeguards, so only swim when you can see a lifeguard on duty.

The pool itself has no changing rooms or café, but Praia do Tamariz has:

• showers, toilets and changing rooms
• a first-aid post
• restaurants and bars along the beach and the promenade
• access to the sand by steps and a ramp

In 2026 Tamariz was one of Cascais’s three accessible beaches, with Conceição and Carcavelos. The Portuguese Environment Agency’s beach profile lists an amphibious chair, a floating wheelchair that takes someone with limited mobility into the sea. Cascais runs the chair service with a trained volunteer team called Maré Viva, and the council’s accessible-beaches page gives it as daily, 09:00 to 19:00, from 15 June to 12 September. The same page says a beach wheelchair for children (a “buggy”) is lent free from the beach information post.

Parking is limited and spread along the Avenida Marginal, which fills up on summer weekends.

Take the train on the Lisbon to Cascais line and get off at Estoril; the beach is next to the station. Buses stop nearby too. You can also walk or cycle along the seafront promenade, the Paredão, which runs between Estoril and Cascais past the pool.

Being free, central and next to a station, this pool gets very busy on hot summer weekends. Go early, or on a weekday, if you want space. There’s little natural shade on the beach or the promenade, so bring hats, sun cream and a parasol for the sand. Swim caps aren’t a rule here as far as the council’s pages go, but ocean-pool rules can be posted on site, so read any signs when you arrive.

Toddlers can paddle at the edge of the beach, but the council doesn’t describe a shallow area in the pool itself, which is why we’ve listed this for children from 4 up.

About a kilometre towards Cascais, next to Praia das Moitas in Monte Estoril, the council’s second free ocean pool, the Piscina Oceânica Alberto Romano, is built into the promenade. Time Out describes it as about 50 metres long, with a café-restaurant terrace nearby, and gave the same summer season. Cascais Ambiente warns that Praia das Moitas is small and very rocky, so take care at low tide. Monte Estoril station is the nearest stop.

For a smaller beach with its own lifeguards a little further east, try Praia da Poça in São João do Estoril. Or walk the Paredão west into Cascais for ice cream at Santini, then let the children run in the peacock-filled Parque Marechal Carmona. The Borboletário de Cascais, a butterfly house a short drive inland at Quinta de Rana, is a good calm stop if everyone needs shade.

Is the Tamariz ocean pool free?

Yes. Cascais council lists it as an ocean pool with free access.

Is there a lifeguard?

The beach next to the pool is lifeguarded and has a first-aid post during the bathing season. Outside the season there’s no lifeguard.

How do you get there by train?

Take the Lisbon to Cascais line to Estoril station, which is right by the beach.

Is it good for toddlers?

The beach is gentle for paddling, but the council doesn’t give the pool’s depth, so check it yourself before letting a small child in and stay within arm’s reach.

When does it open?

It’s a summer pool. Cascais’s 2026 bathing season ran from 1 May to 30 September, and Time Out gave the pool the same dates.

Can a child who uses a wheelchair get into the sea here?

Tamariz is one of Cascais’s accessible beaches. It has an amphibious chair with volunteer helpers in summer, and the council lends a children’s beach wheelchair free from the beach information post.