26 August 2026 • 6 min read
Pico's diving is shaped by its position at the edge of one of the deepest ocean channels in the North Atlantic. Volcanic arches and lava formations dominate the shallow sites; open-water dives bring encounters with manta rays, mobula rays, and large pelagic fish including tuna and amberjack.
Best season: June to October | Water temp: 18 to 24°C | Visibility: 15 to 30m typical
The Azores sit on a hotspot above a mid-Atlantic ridge, and that geology shapes everything about diving here. The ocean floor around Pico drops sharply from the island's coast into water that exceeds 1,000 metres just a short distance from shore. The result is a combination of volcanic reef dives and open-water pelagic encounters that is unusual in the North Atlantic.
Pico is not the easiest Azorean island for diving logistics, but it is one of the most productive for wildlife. The channel between Pico and Faial is the same corridor that makes the area one of the best whale watching zones in Europe. Divers share that water with a food chain that reaches from baitfish and tuna to sperm whales.
Diving Conditions
Water temperature: Atlantic water around Pico ranges from approximately 17 to 18°C in late winter and spring to 22 to 24°C at the surface in August and September. A 5mm wetsuit is appropriate for most of the year; a 7mm suit or drysuit is worth considering for winter dives and deeper sites.
Visibility: Visibility is one of the most variable factors in Azorean diving. In peak summer months with calm conditions, visibility of 25 to 30 metres is common. After Atlantic swells or plankton blooms, it can drop to 10 metres or less. Operators check conditions before departure and will reschedule if visibility is poor.
Currents: Some sites around Pico and the channel experience significant currents, particularly during tidal changes. These currents concentrate baitfish and, in turn, the pelagic species that feed on them. Dive operators brief customers on conditions at each site. Most Pico diving is appropriate for intermediate to advanced divers; complete beginners are generally limited to sheltered shallow sites.
Best months: June to October for the combination of water temperature, calm conditions, and pelagic species. The best manta ray and mobula ray encounters tend to occur from late spring through summer. Year-round diving is possible but winter months bring more swell and rougher conditions.
What You Can See
Manta rays and mobula rays: The channel between Pico and Faial is one of the most reliable locations in the Azores for manta and mobula ray encounters during summer months. These are open-water encounters rather than reef dives, conducted as drift or blue-water dives.
Tuna and amberjack: Atlantic bluefin tuna and amberjack are common in the channel, particularly in summer. Encounters can be brief and fast-moving but can also be extended if the fish are following baitball activity near the surface.
Volcanic reef: The shallow volcanic formations along Pico's coast provide habitat for moray eels, octopus, parrotfish, grouper, and wrasse. The lava arches and tunnels along the north coast are the most distinctive features for reef diving.
Sperm whales and dolphins: Surface encounters with dolphins are common on dive trips. Sperm whale encounters from the water are rare and regulated, but divers operating in the channel routinely hear whale clicks on the descent.
Rays and sharks: Blue sharks are seen on pelagic dives, particularly in the channel during summer. Spotted eagle rays are present around rocky bottom habitats. Hammerhead sharks are occasionally reported but not reliably encountered.
Main Dive Sites
Baixa do Calhau: A seamount rising to approximately 15 metres below the surface near the north coast. Good for reef fish, moray eels, and occasional ray encounters. Accessible to intermediate divers.
Arcos da Prainha: Lava arches along the south coast near Lajes. Depth ranges from 5 to 20 metres. Good for macro life, octopus, and reef fish. One of the more visually distinctive sites on the island.
The Channel (Faial-Pico): Open-water drift or blue-water dives in the channel between the islands. This is where pelagic encounters happen. Depth is effectively unlimited but dives are conducted in the mid-water column. Appropriate for experienced open-water divers.
Banco D. João de Castro: A more distant seamount between Terceira and São Miguel sometimes visited on multi-day liveaboard trips from Pico. Not accessible on standard day dives from Madalena.
BOOK A DIVE
Dive tours from Pico include reef dives, channel pelagic dives, and snorkeling. Operators run from Madalena and Lajes with equipment rental available.
View Diving & Snorkeling Tours →Practical Information
Operators: Pico has a small number of dive operators based in Madalena and Lajes do Pico. Advance booking is strongly recommended in July and August when boats fill quickly. Equipment rental (BCD, regulator, wetsuit) is available but quantities are limited.
Certification: Open Water certification is sufficient for most reef sites. Advanced Open Water is recommended for channel pelagic dives. Nitrox is available from some operators.
Combined trips: Dive operators on Pico sometimes run combined dive and snorkel trips, or can coordinate with whale watching operators for back-to-back bookings. Ask when booking if you want to combine activities.
From Faial: Several dive operators in Horta on Faial also run trips to the Pico-Faial channel. If you are based on Faial, it is worth comparing operators on both sides.
Pico Island Vacation Packages
Ready-to-book packages that include Pico Island, with flights, accommodation, and car hire arranged. Diving and snorkeling can be added on request.
Keep reading
Frequently Asked Questions
Is Pico Island good for diving?
Yes. Pico offers a combination of volcanic reef diving and open-water pelagic encounters that is uncommon in the North Atlantic. The channel between Pico and Faial is one of the most productive marine corridors in the Azores, with manta rays, mobula rays, tuna, and sharks encountered regularly in summer.
What is the best time to dive in Pico Island?
June to October offers the best combination of water temperature (20 to 24°C), visibility, and pelagic species activity. Manta and mobula ray encounters are most likely from late spring through summer. Diving is possible year-round, but winter conditions bring more Atlantic swell and lower water temperatures.
Can beginners dive on Pico Island?
Yes, at the sheltered reef sites. Beginners with Open Water certification can dive sites like the volcanic arches on the south coast. Channel pelagic dives and sites with stronger currents are better suited to intermediate or advanced divers. Check with the operator when booking for a site recommendation based on your level.
Do I need to bring my own gear to dive on Pico?
No. Dive operators in Madalena and Lajes do Pico offer full equipment rental including BCD, regulator, wetsuit, and tanks. In high season, it is worth confirming availability when you book, particularly for wetsuit sizing.
Can I snorkel on Pico Island?
Yes. Snorkeling is available at the natural lava pools along both coasts and as part of some dive operator packages. The pools at São Roque on the north coast and the fajãs along the south coast offer calm, clear water for snorkeling without needing dive certification.
