Sesimbra Beach and Cave Tour

5.0 - Based on 7 travel reviews
  • 3 km
  • 3-4 Hours
  • Sea
  • 14ºC-22ºC (57ºF-72ºF)

  • Dive into the breathtaking turquoise waters of Ribeiro do Cavalo, often voted one of Europe’s most beautiful beaches
  • Swim through an incredible maze of natural arches, secret tunnels, and narrow passages between the rocks
  • Embark on an adventure into the Gruta do Tamboril, an extraordinary sea cave that captivates every visitor

An outdoor swimming experience in one of the most beautiful beaches in Europe.

Ribeira do Cavalo Beach is a beach of wild and paradisiacal beauty, with a sea of ​​waters that are sometimes turquoise and sometimes emerald green. The rocky islands, natural arches and caves so characteristic of this coastline make this swimming route a real dream.

It is from the blue inlet of Sesimbra that we will start to swim, in a swimming course full of marine life and holes in the rocky walls.

We meet at Marina de Sesimbra from where we depart by boat to Praia da Ribeiro da Cavalo.

Arriving at Enseada da Mula we will start our swimming tour passing by Enseada da Mula and Gruta do Frade.

We will end this unforgettable experience with a boat trip back to Sesimbra, where there is a high probability to see dolphins.

Included

  • Personal Accidents Insurance
  • Accompanied by experienced guides
  • Boat and kayak support (for groups minimum 8 pax. If there is no group, a walk will be made to the swimming location)
  • Food - Typical cake from the region
  • Photos

Not Included

  • Equipment
  • Anything not mention in the "included" section
How long does the tour last approximately?

The tour usually lasts between 2 and 4 hours, including travel, preparation, briefing, swimming adventure, lunch, and rest breaks.

What happens in case of bad weather?

In case of adverse weather conditions, the tour may be postponed or canceled, with options for rescheduling or refunds. Initially, we will always try to choose an alternative swimming location.

I don't have a wetsuit or buoyancy aid. Can I rent one?

Yes, equipment such as buoyancy aids and wetsuits may be available for rent upon prior request.

Can I bring food and/or drinks?

Yes. We advise hydration before and after the tour, and recommend bringing food that you are used to eating during physical activity.

How can I book?

Reservations are made online through our website, with instant confirmation by email. We recommend booking in advance, as groups are small.

How is payment processed?

Payment is made in full at one time.

Can I bring a companion who cannot swim?

Most of our trips can accommodate guests who cannot swim; however, please note that this is subject to availability and cannot be guaranteed.

Is this experience for me?

This experience is for those who love adventure, making new friends, and feeling life pulsing in every moment! If you come with an open mind, relaxed, and eager to see the world in a different way, get ready for an unforgettable experience.

It is important to bear in mind that, as this is an adventure, unforeseen events may occur. You may encounter animals that you don't usually see in your daily life, the internet may be unstable, and the food may not be the same as your mother's, and that's okay! It is these details that make the experience special and genuine. But that's a good thing, because if everything were the same, it wouldn't be worth leaving home.

If you invite a friend to come with you, it is essential that you inform them of this. At SwimTogether, we don't want grumpy travelers. Here, a good mood and the desire to enjoy every moment are essential!

Is the transfer included?

No, transfers to the meeting point are not included.

Who will I be sharing this swimming experience with?

Throughout the adventure, travelers will be accompanied by SwimTogether guides. They will also travel with other participants of various ages and swimming abilities, which may include young students, retired couples, solo travelers, groups of friends, experienced open water swimmers, or people who are not used to swimming outside of a pool. Whatever the composition of the group, you can be sure that you will meet a mix of fascinating personalities from all over the world, united by a common love of swimming and nature.

Are there age restrictions for participating in a SwimTogether trip?

All guests must be 18 years or older on the start date of our adventures or be accompanied by an adult swimmer if they are between 16 and 18 years old. The price of the experience is the same as for an adult.

How many places on the tour can I buy at once?

You can reserve all the places for yourself and your friends. It always depends on the availability of the experience.

How fast should I swim?

In our activities, we have a wide range of speeds, with participants swimming 1 km in open water in between 15 and 30 minutes. As a reference, guests should be able to swim at least 1 km in 30 minutes. The average speed in SwimTogether experiences is 15 to 20 minutes per kilometer, about 24 to 32 minutes per mile.

In private activities, you don't need to worry. The entire adventure will be tailored to your swimming level.

Do I have to complete all the swims?

No. After all, you're on vacation! For private tours or small groups, we will adapt the swimming route according to your swimming level and comfort in the water. For larger groups, if you need to take a break during the swim, you can always get on the support boat at any time. On trips where we use kayaks instead of boats, the guides can advise you on the various options for getting out of the water and walking different parts of the route, whenever possible.

What kind of support is provided during swimming?

Most of our tours are private or in small groups. In these situations, your guide will accompany you in the water, swimming side by side and at your swimming pace.

For larger groups, each group of swimmers is accompanied by their own support boat in each session. On most adventures, these boats usually consist of a semi-rigid main boat and a kayak; however, when motorized boats cannot be used, guides accompany swimmers in support kayaks. The boats and guides are there to ensure safety, provide drinks and snacks, and help with anything you need throughout the experience.

Do we see marine life while swimming?

One of the great joys of open water swimming is the opportunity to enjoy the incredible variety of wildlife, natural topography, and underwater landscapes that most people never get to see. The type of marine life you may encounter varies greatly from place to place. We have swum with everything from curious stingrays and sea lions to laid-back sea turtles and unique fish.

Encounters with wildlife: what factors should you take into account?

This experience takes place in environments where wild animals live in their natural habitat, with limited or no protection or control over their movements. Some species may be dangerous, poisonous, or unpredictable. Observing these animals is a privilege, but safety must always be a priority. You must strictly follow the guide's instructions and the existing signage.

We recommend that you consider your comfort level with wildlife and discuss any concerns with the host before the activity, especially if you have allergies, phobias, or other related health conditions.

Do you have any other questions?

You can send us an email and we will be happy to answer you: info@swim-together.com

Overall Trip Rating:

Total Reviews 7
Average Rating
5.0
Based on 7 travel reviews
😀 5 Excellent
7

🙂

4 Very Good
0

😕

3 Average
0

🙁

2 Poor
0

😡

1 Terrible
0
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  1. Verified Purchase
    By Helena Raposo Lopes Maio 17, 2026 Fantástico!
    Fantástica experiência, de nadar em conjunto. O André e o Gustavo foram muito prestáveis e o grupo foi excelente. Máximo profissionalismo e lindo passeio pelo mar. A nadar🥰😀…
    Reply
  2. Verified Purchase
    By Lorenzo Raselli Maio 17, 2026 Absolutely recommended!
    I had the chance to take part in the Sesimbra Beach & Cave Tour today, and I can highly recommend this experience. The absolute highlight was swimming along the cliffs and into the caves – a truly unique and unforgettable spectacle. The scenery is simply stunning. The organization was excellent: we were well taken care of at all times, and the support boat was always nearby, which made us feel very safe. I especially liked that we were even allowed to swim all the way back to the harbor. After the swim, we were welcomed on the boat with tea and delicious pastries – a perfect way to finish the tour. The organizers were also in the water with us and kept a close eye on everyone. You could really feel their passion and experience. Overall, a fantastic event – absolutely recommended!
    Reply
  3. Verified Purchase
    By Beatriz Sécio Agosto 25, 2025 Great overall experience!
    Great overall experience! The guides were amazing and showed us some of the most amazing caves along Sesimbra's coast line. Their experience and cheerful spirit provided great confidence to swim alongside them, even for the least experienced swimmers in the group. You can rent the swim suit with them and the swimming cap is also provided. I'm not 100% sure, but they might also have some floaties to signal your location in the water. You should bring some goggles and (if you'd like) fins to help you swim. I would recommend this experience to all swimmer levels. You'll have a great and challenging time with your group!
    Reply
  4. Verified Purchase
    By Sarah J Levin Agosto 15, 2025 A perfect aquatic adventure near Lisbon!
    I had so much fun swimming in Sesimbra (cave tour) and Cascais (Boca do Inferno) in early August with Arseniy! I felt safe, swam in places I couldn't swim by myself and meet fellow swimming enthusiasts. Arseniy took great photos and videos of us, showed us sea creatures and was generally a kind and friendly host. His love of the sea and swimming was infectious. I will swim with swim together next time I'm in Portugal for sure!
    Reply
  5. Verified Purchase
    By A G Junho 26, 2025 Open Water Sesimbra with SwimTogether
    Andre organized a highly professional swim tour and training program. He was consistently attentive to the needs of the group, ensuring everyone felt safe and supported—especially during the open water swims, where the safety infrastructure was clearly in place and reassuring. The tour was conducted in English, and I always felt comfortable with the communication, including scheduling, safety briefings, and general information. Andre is not only extremely friendly but also easy to work with, creating a positive and relaxed atmosphere throughout the trip. I would gladly join this tour again and wholeheartedly recommend it to others.
    Reply
  6. Verified Purchase
    By Ana Rita Lino Maio 31, 2024 Open Water in Sesimbra 🐠
    An amazing experience and adventure, i loved it so much. Great staff. And for those who love the ocean, nature and swimming, you have to experienced at least one time some of their tours. And in the end you will want to do it another tour! Excited for the next one! 🦀🐠
    Reply
  7. Verified Purchase
    By David Abril 27, 2024 Despite poor conditions we had a great swim
    Despite unfavorable conditions in Faro our guide Jos made our experience a great morning. We gave the ocean a go but swells and waves were too much so we moved over to the channel and had a great swim Jos is really a good guy and fun to swim with We had a great experience
    Reply

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