Sintra is famous for its fairy-tale palaces, lush forests, and mysterious ruins, but it’s also a fantastic launching point for boat tours and cruises. The coastline around Sintra offers dramatic cliffs, sea caves, and historic ports that are best appreciated from the water. One of our favorites is the full-day Algarve coast trip (see details here), which combines sea cave exploration with beach visits, all just a short drive from Sintra. Another standout is the private Knights Templar route (more info here), offering a historical journey that includes a boat ride to Almourol Castle. Both options showcase how boats can add a unique perspective to your Portugal adventure.
Below, you’ll find a curated list of two top boat tours and cruises in Sintra. These experiences vary from a scenic coast tour to a personalized castle cruise, allowing you to pick the best fit for your interests and schedule.
1. ALGARVE FROM THE SEA PORTIMÃO includes boat trip to Benagil caves AND LAGOS
This full-day tour takes you from Lisbon to the stunning Algarve coast, where you’ll experience a boat trip to the famous Benagil caves. The tour includes visits to Praia da Marinha—a beach known for its clear waters and dramatic cliffs—and the historic town of Lagos. The boat trip around the Algarve’s sea caves is the highlight, giving you close-up views of the Benagil sea cave and other hidden rock formations.
What makes this tour stand out is the combination of land and sea—you get to explore beautiful beaches like Camilo and Dona Ana, and enjoy panoramic views from Ponta da Piedade. The boat trip itself is guided and includes bottled water and WiFi, making the journey comfortable and informative. Several reviews mention the knowledgeable guides and the flexibility to customize stops, adding value for travelers who want more than just a standard cruise.
The tour is ideal for those who want a full-day adventure with a mix of scenic sailing, beach lounging, and cultural exploration. The price of around $437.91 per person reflects the length and inclusiveness of the experience, which is perfect for those seeking a comprehensive Algarve highlights package.
Bottom Line: A fantastic choice for travelers seeking a long, all-encompassing day that combines boat caves, beaches, and charming towns with all the comforts of a guided tour.
2. Private Tour KNIGHTS TEMPLAR ROUTE Includes tickets for 2 castles and boat trip
This private tour is a deep dive into Portugal’s medieval past, following the route of the Knights Templar. It includes guided visits to significant sites like Ourem Castle, the Convent of Christ (a UNESCO World Heritage Site), and Almourol Castle in the middle of the Tagus River. The boat trip part of this tour adds an extra layer of excitement and historical context, especially when approaching Almourol Castle by water.
What sets this tour apart is the personalized experience—your private guide will share stories about the Templars’ influence, their symbolism, and the castles’ strategic importance. The inclusion of tickets to two castles plus a boat ride makes this a well-rounded cultural day. Guests have praised the guide for being engaging and knowledgeable, which enhances the overall experience.
The tour lasts about 8 to 9 hours and is priced at $313.00 per person, offering good value considering the private guide, tickets, and boat trip, especially for history lovers who prefer a more intimate experience. The boat ride in particular offers memorable views of the Castelo de Almourol, situated on the river, making it a highlight for many.
Bottom Line: Perfect for history enthusiasts who want a personalized, in-depth look at Portugal’s Templar past, combined with a scenic boat trip.
How to Choose Your Perfect Boat Tour in Sintra
When deciding between these options, consider your interests and schedule. If you want a full-day exploration of Algarve’s coast, with time to relax on beaches and see sea caves, the ALGARVE FROM THE SEA PORTIMÃO tour (see it here) is the way to go. It’s ideal for travelers eager for a combination of scenic boat rides and cultural stops.
On the other hand, if you prefer a more intimate, historically focused experience that combines castles and a boat ride through Portugal’s medieval landscape, then the Private Knights Templar Route (find out more) offers personalized attention and in-depth stories.
Consider your budget: the Algarve trip is more expensive but includes a full day and extensive stops, while the Templar tour offers a smaller group experience with a focus on history. Think about your time availability—a full day or a slightly shorter, private experience—and your interest in beaches versus castles.
Booking early is recommended, especially in high season, so you can secure your preferred date and avoid disappointment.
Final Thoughts
Sintra offers more than fairy-tale palaces—its waters and coastlines are just as captivating. Whether you choose the scenic Algarve coast cruise to explore caves and beaches or the historical Knights Templar route with a boat trip to a castle, both tours provide memorable ways to see Portugal from the water. For families, history buffs, or adventure-seekers, these experiences add a unique layer to your trip.
If you’re looking for a longer day filled with natural beauty, go for the Algarve trip. For a personalized, history-focused adventure, the Knights Templar route is perfect. Whichever you pick, booking early ensures you won’t miss out on these memorable water adventures in Sintra.
