As the Benagil Sea Cave was what I was most eager to see while visiting Algarve, I had booked a hotel close to where the cave is located (10 minutes drive). But being in Portugal I suddenly had no idea how to visit it except from expencive boat trips from cities like Albufeira, Carvoeiro, Lagos, Portimao and Faro. This in boats that are too big to go into most of the caves. But I found that there are better ways to visit this beautiful sight.
Local fishing boats to visit the cave
As there was little information to find about other ways to visit the cave we drove in a rental car to Benagil, a small village, for see if there were other options than the big boats going from the big cities.
In front of the beach two companies were selling trips going to the caves in local fishing boats for 17 Euros per person (Price May 2016). However, due to big waves we were told to call in the morning for ask if they were having trips. The next day the sea was calmer and we therefore returned.
The boat trip started from Benagil beach, going west into many stunning caves. Then it went to the east where the Benagil cave is located only around 150 meters form the beach.
As the cave is located so close to the beach there is no problem swimming to it if you are a good swimmer, and the water is calm. However, I would never reccomend swimming if there is rough sea, due to the rocks.
In the picture under you see how close the cave is from the beach. The entry to the cave is where the red circle is.
Kayaking or walking
There is also a option to rent a kayak. As you see in the picture it is also possible to walk and see the cave from above. I did not do any of this, and therefore have no experence when it comes to these two options.
However, the boat trip from Benegail beach can be reccomended, and was worth every penny. The cave was as beautiful as in the pictures.
However, an negative aspect is that you not always cannot go out of the boat while in the cave. This is just possible days where there sea is extremly calm.
A small tip if you take the boat-trip:
Protect your camera, you will get splashes on it. Mine got full of salt water one time, and I just had to put it back in my camera bag, and started using my phone instead.