Benagil cave tour from Portimão: every trip and how long the run takes

Portimão is a real port. It has a commercial harbour, a fishing fleet and a large marina at the mouth of the Arade, and the tourist boats are one part of a busy piece of water rather than the whole of it.

The practical effect is choice. This is where the guided kayak trips run from, because the catamaran transfer to the cave area is short. It is where the two-deck cruise boats with lunch and an open bar are based. It is where the private charters keep their hulls.

It is also the closest of the main ports to Benagil, about ten kilometres east, so a two-hour trip from here spends less of itself travelling than the same trip from Lagos.

On the way out you pass Ferragudo, a white village stacked above the river with a sixteenth-century fort at the mouth, then Carvoeiro and the eroded shelf of Algar Seco. It is a good ten kilometres before you get anywhere near the famous cave.

If the reason for the trip is the cave itself rather than the coast, this is the port. The guided kayak trips are based here, and they are the only craft the harbour rules allow eight minutes inside Algar de Benagil instead of two.

You do not paddle from Portimão. A catamaran carries the group along the coast to the kayak area, which takes the distance and most of the swell out of it, and the paddling is short and sheltered. No experience is needed.

Groups are six kayaks plus a guide, which is set by the rules rather than by the operator, and up to seven craft may be inside at once. These trips sell out first.

Five places run boats to Benagil, and the differences are smaller than the marketing suggests. Every trip reaches the same cave and every motorised trip gets the same two minutes inside it. What changes is the journey and the price.

Portimão and Armacão de Pêra are closest, so more of the trip is spent among the caves rather than getting to them. Portimão also has the widest choice of craft, including the guided kayaks.

Albufeira has the cheapest seats and the most departures, which matters in August when the first slots go early.

Lagos is furthest but adds Ponta da Piedade, which is the best stretch of coast in the region and is on no other itinerary.

Lisbon is a different product entirely: a full day with transport, of which the boat is one part.

The honest rule is to leave from wherever you are sleeping. The drive to a marginally better port costs more in fuel, parking and morning than it returns.

Whichever port you leave from, the rules at the cave are the same. A motorised boat may stay two minutes inside Algar de Benagil; a guided group of kayaks or paddleboards may stay eight. Up to three motorised craft under twelve metres may be inside at once, or one larger craft alone, and up to seven non-motorised craft entering through the eastern arch.

Landing on the sand inside is prohibited, as is entering by swimming or on any unpowered float, diving in or near the cave, and navigating there between sunset and sunrise. None of this is at the operator’s discretion — it is set out in Edital 019/2024 of the Portimão harbour master, and the fines start at €300.