Sea Cave Snorkeling Tours in Portugal: Our Top 9

1.Sesimbra: Arrábida Beaches & Caves Boat Tour with Snorkeling

★★★★★★★★★★4.9 · 191 reviews · 3 hours · from $58Our pick

Set out from Sesimbra with an STCW-certified crew and a multilingual guide for three hours along Arrábida Natural Park. You’ll visit Ribeiro do Cavalo, Mijona, Inferno, Baleeira, and caves near Cabo Espichel, with time to swim, snorkel, hear local fishing stories, and taste a Setúbal regional drink. Catarina, Chantel, Marta, or André may lead the outing.

“This activity was amazing- our tour guide Catarina ensured before arrival that we find the meeting point and was helpful at all times. She provided lots of interesting information about the area of Sesimbra and beaches around. It’s a great mixture of fun, swimming and infos. We even were lucky and saw dolphins. We would recommend the tour and do it again once we are back. :)”

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2.7 Valleys Hiking, Benagil Cave, & Snorkeling Tour

★★★★★★★★★★4.9 · 123 reviews · from $57

Travel from Faro in a small group of up to eight with guides Claire or Sebastian. See Benagil Cave from above, walk the 1.5-kilometre Seven Hanging Valleys Trail, enjoy two hours at Marinha Beach with a mask and umbrella, then visit Senhora da Rocha Chapel.

“Our group of 6 adults in their twenties had the pleasure of being guided by Claire, a lovely woman from the UK who gave a wonderful tour through the seven Valley's. her knowledge about the history of the place, the flora and fauna and the locals is impeccable! She is very sweet and charismatic and gave the whole experience a lovely vibe. The scenery is amazing, beautiful nature where you can really lose your thoughts and be one with nature. After the walk we had a lovely time at the beach, we couldn't snorkel sadly because of the rough sea but that didn't spoil the fun. we had a lovely…”

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3.Arrábida Secret Beaches and Caves with Snorkeling Stop

★★★★★★★★★★5.0 · 109 reviews · 3 hours (approx.) · from $60Top rated

Set out from Sesimbra with guides such as Catarina and André for a three-hour boat ride through Arrábida Natural Park. Visit Ribeira do Cavalo, Mijona, Inferno, Baleeira, and Cabo Espichel, with time to swim or snorkel in clear water. The boat holds up to 30 people, and a Setúbal liquor tasting is included for adults.

“Muito obrigados pelo passeio com a Caterina e o André. Recomendamos fazê-lo Foi ótimo e ficara memoravel!”

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4.Visit Secret Caves, Hidden Beaches and Snorkel in Alvor, Portugal

★★★★★★★★★★5.0 · 98 reviews · 4 hours (approx.) · from $96

Set out from Alvor for four hours of snorkeling, cave exploration, and quiet beach time with marine biologists such as Pedro and Inês. You’ll use provided wetsuits and gear, swim through calm bays, spot sea life, crawl into unusual coastal caves, and finish with a simple beach picnic and photos.

“A wonderful experience to be snorkelling close to the rocks and inside the cave. The gear was of a very good quality. The crew was very professional and kind. Lots of information about the history of the place, the vegetation, fish and little animals clinging to the rocks made this trip even more worthwhile. All this in very good ambiance and energy. Looking forward to meet Pedro and his crew again for another amazing nautic experience. Até breve! Catharina”

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5.SUP Tour in Algarve Ingrina Caves w/ Snorkeling & Photos Included

★★★★★★★★★★5.0 · 44 reviews · 3 hours (approx.) · from $63

Join Nelson and the Coastline Algarve team for a three-hour SUP outing near Ingrina and Barranco beaches. After a 10-minute shore lesson, paddle through grottoes, snorkel in small caves, swim, and try optional cliff jumps. Boards, wetsuits, snorkel gear, and photos and videos sent by email are included.

“Cliff jumping and the different caves we could swim in. Nelson is also very knowledgeable about nature and the spots we visited.”

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6.Algarve: Stand Up Paddle Tour w/ Snorkeling to Ingrina Caves

★★★★★★★★★★5.0 · 43 reviews · 3h 30m · from $68

Learn stand-up paddleboarding with an ASI-certified guide, then paddle from Ingrina or Barranco beach into caves, grottoes, and quiet coves near Sagres. Wetsuit, shoes, buoyancy aid, snorkeling gear, transfers, and photos are included. Guide Nelson is known for patient explanations when he leads the outing.

“The SUP had to be cancel due to wave but I did the coasteering instead and it was such an amazing moment.”

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7.Peniche: Berlengas Island Caves Tour and Snorkeling

★★★★★★★★★★4.6 · 32 reviews · 4 hours · from $53Best value

You’ll sail from Peniche to Berlenga Grande by catamaran, then see the Blue Cave, São João Batista Cave, and Elephant’s Trunk from a glass-bottom boat. Snorkeling is self-guided, with mask, fins, and tube provided. Allow four hours, bring sunscreen and water, and register for the island tax before you go.

“Great, loved the Berlebgas Islands and seeing the fort.”

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8.Sesimbra: Arrábida and Espichel Caves Tour and Snorkel

★★★★★★★★★★4.5 · 20 reviews · 2.5 hours · from $813 per boat (seats 16)

From Sesimbra Harbour, your guide takes you by boat to Tamboril and Frade grottos, sea-eroded mesas, Espichel Cape formations, and Ribeiro do Cavalo Beach. You can swim and snorkel at Baleeira Beach before tasting local Moscatel wine. Guides speak English, French, Portuguese, and Spanish, and private groups can include up to 16 people.

“What a great expirience. The Tour guide and captain were amazing.”

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9.From Tavira: 7 Valleys Hiking, Benagil Cave and Snorkeling

★★★★★★★★★★4.8 · 8 reviews · from $68

From Tavira, join a small group of up to eight for a 7-hour Algarve coast outing. You’ll see Benagil Cave from above, hike 1.5 kilometers on the Seven Hanging Valleys Trail, snorkel at Marinha Beach, and visit Senhora da Rocha Chapel. Guides speak English and Portuguese, and Claire may lead your group.

“very well organised and guided tour, competent and caring tour leader, Claire, a super guide and a wanderful person. we consider us very lucky. Barbara and Ornella, Swizerland”

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