Can you swim in the Blue Grotto?
Which boat, and from where?Every option below still leaves the €18 at the cave to pay on the spot. What changes is where you sail from and how long the day is.
Compare all sevenThe claim to ignore
You will read that you can swim in after 5:30 in the afternoon, once the boats have finished for the day. The pages usually cited for that say, in the same sentence, that it is illegal and dangerous. The caveat falls off in retelling and the permission survives, which is how a rule with no exceptions in it becomes a widely repeated exception. The written rules contain no time limit at all: the prohibition covers entering the water for pleasure inside and outside the cave, full stop.
It is enforced
Four people were fined €1,032 each in July 2020. Other reported cases include a group fined close to €5,000 and an influencer facing up to €2,000. I publish the range €1,000 to €3,000 rather than a single figure, because the reported penalties vary and nobody should plan around one number. The point is not the exact amount. The point is that it is a real ordinance with real enforcement behind it, and not a sign nobody reads.
Why it is dangerous as well as illegal
The mouth is about a metre high and two metres wide. Swell pushes swimmers against rock in a gap that size, and there is no room to be pushed anywhere else. During opening hours the rowboats come through that channel continuously, and a loaded rowboat under a chain cannot stop or steer around somebody in the water. So for most of the day it is physically impossible as well as forbidden, and outside those hours you are in a one-metre gap in an unlit sea cave with no traffic to see you.
If what you actually want is to swim on Capri, there is plenty of coast that is not a capacity-capped state archaeological site with a boat queue in front of it. Just not this cave, and not the water outside it either.
Since that is the whole of the visit, it is worth deciding in advance whether four minutes in a boat is what you came for. I have argued both sides on whether the Blue Grotto is worth it, and the timings are on how long the visit lasts.
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Frequently asked questions
Can you swim in the Blue Grotto in Capri?
No. Swimming is prohibited at all hours, inside the cave and in the water outside it. CoopCulture’s visiting rules forbid entering the water for pleasure in both places with no time exception, and the ban rests on a Naples Port Authority ordinance covering any hour of the day.
Can you swim in the Blue Grotto after 5pm?
No. The evening loophole does not exist. The sources usually quoted for it state in the same sentence that swimming there is illegal and dangerous, and the written rules contain no time limit whatsoever. Four people were fined €1,032 each in July 2020.
What is the fine for swimming in the Blue Grotto?
Reported penalties fall roughly between €1,000 and €3,000, with a documented case of €1,032 each for four people in 2020, a group fined close to €5,000, and an influencer facing up to €2,000. Treat it as a range rather than a fixed figure — the official visiting rules are published alongside the opening times.