© iStock/SeanPavonePhoto Diving in Lisbon Lisbon (Lisboa) is the capital city of Portugal and the cultural epicenter of this beautiful country. Diving in Lisbon is available year-round with several dive centers in Sesimbra and Cascais. The best time to go diving in Lisbon is spring to autumn (April to October) when water temperatures are a bit warmer, 16-22 degrees C (60-71 degrees F). Visibility is average, from 3-8m (10-26ft), but can reach up to 15m (49ft) at times. The most popular dive area in Lisbon is Sesimbra, just south of the capital, and is considered the diving mecca of Portugal. Diving in Sesimbra offers it all from deep rocky reefs, walls, and underwater caves to exciting shipwrecks and great shallow snorkeling sites, something for every level of diver. Some of the most popular dive sites in Lisbon include the massive wreck of the River Gurara, a 170m (557ft) long Nigerian cargo ship, Arcanzil, Cabo Espichel, and Arrábida National Park with its beautiful sheer cliffs. All of these sites lay within a protected harbor. Another popular diving area in Lisbon is Fonte de Telha. This area is more exposed to the open Atlantic Ocean, therefore, giving divers a better chance as spotting larger marine life like dolphins, rays, and ocean sunfish (mola mola). Featured places to go in Lisbon Area © AqualungSesimbraExcellent diving is found here at Arrábida Marine Park, where you can dive nearly year-roundand will discover wrecks and beautiful Atlantic reefs diving.Learn more © AqualungSetubalScuba diving in Setúbal offers divers of all levels exciting reefs to explore while visiting this historical region of Portugal.Learn more Dive Sites in Lisbon Area Discover the wonders of the deep with SSI's blog Join us on an exciting journey of discovery and learn more about exhilarating diving adventures, dedicated conservation initiatives, and innovative educational opportunities that will help you illuminate the extraordinary beauty of the underwater world. Let's explore the underwater world together and delve into the hidden wonders beneath the gentle waves.