Two guided dives off the rocky shores of Cascais let certified divers explore reefs, caves and kelp gardens in under three hours. Expect guided briefings, variable visibility, and close encounters with octopus and groupers.
More ways to explore the area's outdoor wonders
The boat eases out of Cascais harbor and the Atlantic opens like a living map: wind-scoured cliffs to starboard, a ribbon of white surf around granite headlands to port. You feel the swell flexing beneath the hull, the ocean already shaping the rhythm of the day as guides prepare tanks and brief the route.
Difficulty
moderate
Duration
3 hours
Fitness Level
Moderate fitness; comfortable with repeated descents, surface swims and moving gear on a small boat.
Wildlife
History
Cascais evolved from a fishing harbor to a royal and tourist enclave; its maritime culture still shapes local seafood, boat traffic and coastal access points.
Conservation
Much of the coast sits inside the Sintra‑Cascais protected landscapes; divers are asked to avoid contact with flora and fauna and follow guide instructions to minimize impact.
Reserve your spot on the Double Dive in Cascais - go further and go under! today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring your certification card
Operators require proof of certification and recent dive experience; carry your card and logbook.
Check sea conditions
Visibility and currents change quickly—confirm conditions with the guide and be prepared for rolling swells.
Use a dive computer
A dive computer helps manage repetitive dives during the double-dive format and tracks no-deco limits precisely.
Protect your skin on deck
Sun and spray are constant; use reef-safe sunscreen and a light wind layer between dives.
Wetsuit (5mm or 7mm in colder months)
Keeps you warm in Atlantic temperatures that can drop to mid-teens °C in cooler months.
winter
Personal dive computer
Manages dive profiles and repetitive-dive planning during a double-dive itinerary.
Mask and snorkel (well-fitted)
A good mask improves comfort and visibility for surface intervals and shallow exploration.
Surface marker buoy (SMB)
Useful for signaling the boat in open-water ascents and when currents are present.